| "A bee is a pollinating animal" |
| "A bird is a pollinating animal" |
| "An electrical conductor is a vehicle for the flow of electricity" |
| "An example of a change in the Earth is an ocean becoming a wooded area" |
| "An example of a chemical change is acid breaking down substances" |
| "An example of a fossil is a footprint in a rock" |
| "An example of a fossil is a paw print in rock" |
| "An example of a fossil is the bones of an extinct animal" |
| "An example of a mixture is clay mixed together" |
| "An example of a reproductive behavior is salmon returning to their birthplace to lay their eggs" |
| "An example of a seasonal change is an animal growing thick fur for keeping warm in the winter" |
| "An example of a seasonal change is plants becoming dormant in the winter" |
| "An example of a seasonal change is plants dying in the winter" |
| "An example of an adaptation is camel humps" |
| "An example of an inherited behavior is a bird building a nest" |
| "An example of an instinct is the kangaroo 's ability to crawl into its mother 's pouch to drink milk" |
| "An example of an instinctive behavior is a baby bird pecking at its shell to hatch" |
| "An example of avoiding waste is using a material more than once" |
| "An example of avoiding waste is using an object more than once" |
| "An example of camouflage is an organism looking like leaves" |
| "An example of camouflage is when an organism looks like its environment" |
| "An example of camouflage is when something changes color in order to have the same color as its environment" |
| "An example of camouflage is when something has the same color as its environment" |
| "An example of camouflage is when something is the same color as its environment" |
| "An example of collecting data is measuring" |
| "An example of combining two substances is pouring one substance into the other substance" |
| "An example of conservation is avoiding waste" |
| "An example of conservation is not using fossil fuel" |
| "An example of creating an alternative fuel is turning plant material into fuel" |
| "An example of evaporation is a body of water drying up by absorbing heat energy" |
| "An example of hibernation is a frog burying itself in mud" |
| "An example of hitting something is dropping an object onto that something" |
| "An example of hunting is an otter cracking open clams with a rock" |
| "An example of migration is birds flying south in the winter" |
| "An example of moisture is water vapor in the atmosphere" |
| "An example of navigation is directing a boat" |
| "An example of playing a musical instrument is hitting the keys of a piano" |
| "An example of playing a musical instrument is strumming a guitar string" |
| "An example of protecting the environment is creating protected areas" |
| "An example of protecting the environment is reducing the amount of pollutants" |
| "An example of protecting the environment is reducing the amount of waste" |
| "An example of recycling is using an object to make a new object" |
| "An example of replacing a natural resource is planting new trees where a forest once stood" |
| "An example of reproduction is laying eggs" |
| "An example of seed dispersal is animals eating seeds" |
| "An example of seed dispersal is is an animal gathering seeds" |
| "An example of stormy weather is rain" |
| "An example of using tools is a chimpanzee digging for insects with a stick" |
| "An example of weathering is when a plant root grows into a crack in rock" |
| "An insect is a pollinating animal" |
| "August is during the winter in the southern hemisphere" |
| "DNA is a vehicle for passing inherited characteristics from parent to offspring" |
| "December is during the summer in the southern hemisphere" |
| "December is during the winter in the northern hemisphere" |
| "Earth 's magnetic patterns are used for finding locations by animals that migrate" |
| "Earth 's surface is made of rock" |
| "Earth 's tilt on its axis causes seasons to occur" |
| "Earth is made of rock" |
| "Earth is the planet that is third closest to the Sun" |
| "Earth orbiting the Sun causes seasons to change" |
| "Galileo Galilei made improvements to the telescope to make better observations of celestial bodies" |
| "In the cellular respiration process carbon dioxide is a waste product" |
| "In the food chain process a green plant has the role of producer" |
| "In the food chain process an animal has the role of consumer which eats other animals for food" |
| "In the food chain process an animal has the role of consumer which eats producers for food" |
| "In the food chain process bacteria have the role of decomposer" |
| "In the food chain process fungi have the role of decomposer" |
| "In the food chain process some types of plankton have the role of producer" |
| "In the photosynthesis process carbon dioxide has the role of raw material" |
| "In the photosynthesis process oxygen has the role of waste product" |
| "In the respiration process carbon dioxide is a waste product" |
| "In the tree reproduction process a squirrel has the role of seed disperser" |
| "January is during the winter in the northern hemisphere" |
| "June is during the summer in the northern hemisphere" |
| "June is during the winter in the southern hemisphere" |
| "Louis Pasteur invented pasteurization" |
| "Matter in the gas phase has variable shape" |
| "Matter in the gas phase has variable volume" |
| "Matter in the liquid phase has definite volume" |
| "Matter in the liquid phase has variable shape" |
| "Matter in the solid phase has definite shape" |
| "Pluto is the planet that is ninth closest to the Sun" |
| "Vitamin D heals bones" |
| "a Punnett square is used to identify the percent chance of a trait being passed down from a parent to its offspring" |
| "a Rotation of the Earth on Earth 's axis takes 1 day" |
| "a Rotation of the Earth on itself takes one day" |
| "a balance is used for measuring mass of an object" |
| "a balance is used for measuring weight of a substance" |
| "a balloon contains gas" |
| "a barometer is used to measure air pressure" |
| "a bat births live young" |
| "a battery converts chemical energy into electrical energy" |
| "a battery is a source of electrical energy" |
| "a beach ball contains gas" |
| "a beak is used for catching prey by some birds" |
| "a berry contains seeds" |
| "a bicycle contains screws" |
| "a bird is warm-blooded" |
| "a body of water is a source of water" |
| "a bubble contains gas" |
| "a cactus stem is used for storing water" |
| "a cactus stores water" |
| "a camera is used for recording images" |
| "a candle is a source of light when it is burned" |
| "a canyon forming occurs over a period of millions of years" |
| "a canyon is made of rocks" |
| "a car engine is a source of heat" |
| "a car engine usually converts gasoline into motion and heat through combustion" |
| "a carbonated beverage contains dissolved carbon dioxide" |
| "a cavern is formed by carbonic acid in groundwater seeping through rock and dissolving limestone" |
| "a chipmunk eats acorns" |
| "a chloroplast contains chlorophyll" |
| "a closed circuit has continuous path" |
| "a community is made of many types of organisms in an area" |
| "a compass 's needle lines up with Earth 's magnetic poles" |
| "a compass is a kind of tool for determining direction by pointing north" |
| "a compass is used to navigate oceans" |
| "a compass is used to navigate seas" |
| "a complete electrical circuit is a source of electrical energy" |
| "a complete revolution of the Earth around the sun takes one Earth year" |
| "a complete revolution of the Earth around the sun takes one solar year" |
| "a computer controls a robot" |
| "a consumer can not produce its own food" |
| "a cycle happens repeatedly" |
| "a cycle occurs repeatedly" |
| "a decrease in visibility while driving can cause people to crash their car" |
| "a deer lives in a forest" |
| "a dense forest environment is often dark in color" |
| "a desert environment contains very little food" |
| "a desert environment has low rainfall" |
| "a desert environment is dry" |
| "a desert environment is low in availability of water" |
| "a desert environment is usually hot in temperature" |
| "a desert environment usually has a lot of sunlight" |
| "a different moon phase occurs once per week" |
| "a disperser disperses" |
| "a doorbell converts electrical energy into sound" |
| "a female insect lays eggs during the adult stage of an insect 's life cycle" |
| "a fish lives in water" |
| "a flashlight converts chemical energy into light energy" |
| "a flashlight emits light" |
| "a flashlight requires a source of electricity to produce light" |
| "a flower 's purpose is to produce seeds" |
| "a flower is a source of nectar" |
| "a flower produces pollen and seeds" |
| "a force acting on an object in the opposite direction that the object is moving can cause that object 's speed to decrease in a forward motion" |
| "a force continually acting on an object in the same direction that the object is moving can cause that object 's speed to increase in a forward motion" |
| "a forest environment is often green in color" |
| "a forest environment receives more rainfall than a desert" |
| "a frog eats insects" |
| "a glacier causes mechanical weathering" |
| "a glacier is made of ice" |
| "a glacier moves slowly" |
| "a graduated cylinder is a kind of instrument for measuring volume of liquids or objects" |
| "a graduated cylinder is used to measure volume of an object" |
| "a grassland environment receives more rainfall than a desert" |
| "a greenhouse is used to protect plants by keeping them warm" |
| "a greenhouse is used to protect plants from the cold" |
| "a hand dryer produces heat" |
| "a hot plate is a source of heat" |
| "a hot something is a source of heat" |
| "a hot substance is a source of heat" |
| "a human can pedal a bicycle" |
| "a human requires rest to be healthy" |
| "a human requires sleep to be healthy" |
| "a kettle is formed when chunks of ice left by glaciers melt" |
| "a landfill is a source of pollution" |
| "a landslide is when gravity rapidly moves rocks or soil downhill especially after a rain storm" |
| "a laser is used for producing light" |
| "a leaf absorbs sunlight to perform photosynthesis" |
| "a leaf performs photosynthesis" |
| "a lever is used for moving heavy objects" |
| "a light bulb converts electrical energy into light energy when it is turned on" |
| "a light bulb requires electrical energy to produce light" |
| "a line graph is used for showing change over time" |
| "a living thing is made of cells" |
| "a living thing requires nutrients to grow" |
| "a magnet attracts ferromagnetic metals through magnetism" |
| "a magnet attracts magnetic metals through magnetism" |
| "a mammal is warm-blooded" |
| "a mammal usually nurses its offspring" |
| "a mammal usually nurses its young" |
| "a meter stick is used to measure length" |
| "a mirror is used for reflecting light" |
| "a mirror reflects light" |
| "a monkey births live young" |
| "a moth undergoes metamorphosis" |
| "a mother births offspring" |
| "a mouse gives birth to live young" |
| "a nest is made of branches" |
| "a new season occurs four times per year" |
| "a new season occurs once per three months" |
| "a paper clip is often made of ferromagnetic metals" |
| "a phase change is when matter changes from one state into another state" |
| "a plane travels through the atmosphere" |
| "a planet is exposed to the heat of the star around which it revolves" |
| "a planet rotating causes cycles of day and night on that planet" |
| "a plant 's roots slowly break down rocks as the roots grow" |
| "a plant absorbs carbon dioxide from the air for photosynthesis" |
| "a plant cell contains chloroplasts" |
| "a plant light is used for help plants by mimicking sunlight" |
| "a plant requires a specific climate to grow and survive" |
| "a plant requires photosynthesis to grow" |
| "a plant requires soil for to grow" |
| "a plant requires sunlight for photosynthesis" |
| "a plant requires sunlight to grow" |
| "a plant requires water to grow" |
| "a plant stem contains a system of tubes for transporting water and nutrients to other parts of the plant" |
| "a plant stem is the vehicle for transporting water and food from roots to the rest of the plant" |
| "a plants require water for to grow" |
| "a plateau is formed by a buildup of cooled lava" |
| "a polar bear requires a cold environment" |
| "a pollutions standard is a kind of standard for reducing pollutants emitted by factories" |
| "a predator eats other animals for food" |
| "a prism refracts light" |
| "a producer is a source of energy for consumers" |
| "a producer is a source of sugar in an ecosystem" |
| "a producer produces its own food" |
| "a pulley is used for lifting objects" |
| "a pulley is used to lift a flag on a flagpole" |
| "a pumpkin contains seeds" |
| "a quartz is made of six-sided transparent crystals" |
| "a radiator is a source of heat" |
| "a radio is used for communication" |
| "a rainbow is formed by refraction of light by splitting light into all different colors" |
| "a reflector is used to reflect light especially on vehicles" |
| "a renewable resource can be renewed" |
| "a renewable resource can be replaced" |
| "a reptile is cold-blooded" |
| "a revolution is when something revolves around something else" |
| "a revolution of the moon around the Earth takes 1 month" |
| "a riverbank is made of soil" |
| "a rocket engine is used to produce thrust by pushing gases out at a high speed" |
| "a ruler is used for measuring the length of an object" |
| "a salamander eats insects" |
| "a sandbar is formed by water moving sediment downstream" |
| "a satellite orbits a planet" |
| "a scale is used for measuring weight" |
| "a scar is an acquired characteristic" |
| "a sea turtle lives in the ocean" |
| "a seed is used for storing food for a new plant" |
| "a seismograph is a kind of tool for measuring the size of an earthquake" |
| "a seismograph is used for measuring the size of an earthquake" |
| "a seismometer is used to measure the strength or magnitude of an earthquake" |
| "a shower is a source of hot water for washing" |
| "a sifter is used for separating mixtures" |
| "a simple machine requires mechanical energy to function" |
| "a single-cell organism can survive without the help of other cells" |
| "a single-cell organism cannot specialize" |
| "a skinny beak is used for obtaining food by a bird from small spaces" |
| "a skunk produces a bad odor" |
| "a soda can is made of aluminum" |
| "a solar eclipse could only happen during the new moon" |
| "a solar panel converts sunlight into electricity" |
| "a solution is made of one substance dissolved in another substance" |
| "a source of something supplies that something" |
| "a spider web is used to capture food by spiders" |
| "a squid produces thrust by pushing water out of its body" |
| "a star is a source of light energy through nuclear reactions" |
| "a star is a source of light through nuclear reactions" |
| "a star is made of gases" |
| "a stem is a source of support for a plant" |
| "a stem is used to store water by some plants" |
| "a stinger is used for defense by a wasp" |
| "a stopwatch is used to measure time" |
| "a stove generates heat for cooking usually" |
| "a switch is used to stop the flow of current in an electrical circuit" |
| "a tape measure is used to measure distance" |
| "a tape measure is used to measure length" |
| "a tectonic plate moves along a fault line" |
| "a telescope is used for observing stars" |
| "a telescope is used for observing the sky" |
| "a thermal conductor is made of materials that conduct thermal energy" |
| "a thermal energy conductor transfers heat from hotter objects to cooler objects" |
| "a thermal insulator slows the transfer of heat" |
| "a thermometer is used to measure temperature" |
| "a toaster converts electrical energy into heat energy for toasting" |
| "a tree can be replaced by planting a new tree" |
| "a tree growing a tree-growth ring occurs once per year" |
| "a tree is a source of food for animals in an ecosystem" |
| "a tree is a source of food for birds in an ecosystem" |
| "a trunk is a source of support for a tree" |
| "a valley is formed by a river flowing" |
| "a warm front causes cloudy and rainy weather" |
| "a warm something is a source of heat" |
| "a white object reflects all visible light" |
| "a windmill converts wind energy into electricity" |
| "a windmill does not create pollution" |
| "absorbing sunlight causes objects to heat" |
| "acid can cause chemical change" |
| "acid rain has a negative impact on water quality" |
| "adaptation is when an organism develops a trait over time for survival" |
| "adaptations are used for survival" |
| "adding heat to an object sometimes causes chemical reactions" |
| "adding heat to something kills viruses in that something" |
| "adding salt to a liquid decreases the melting point of that liquid" |
| "adding salt to a solid decreases the freezing point of that solid" |
| "adult amphibians live on land" |
| "adulthood is a stage in the life cycle process" |
| "air is a vehicle for sound" |
| "algae is found in bodies of water" |
| "all animals breathe" |
| "all cells perform cellular respiration" |
| "all living things eliminate waste" |
| "all living things grow" |
| "all minerals are formed by natural geological processes" |
| "alligators eat fish" |
| "alloys are made of two or more metals" |
| "alternative fuel is usually a renewable resource" |
| "aluminum is a nonrenewable resource" |
| "aluminum is recyclable" |
| "amphibians hatch from eggs" |
| "amphibians undergo metamorphosis" |
| "an amphibian is cold-blooded" |
| "an anemometer is used to measure wind speed" |
| "an animal 's brain controls that animal" |
| "an animal being born when food is available has a positive impact on that animal 's health" |
| "an animal can survive in an environment with little food by storing fat" |
| "an animal knows how to do instinctive behaviors when it is born" |
| "an animal needs to eat food for nutrients" |
| "an animal requires air for survival" |
| "an animal requires energy to move" |
| "an animal requires enough nutrients to maintain good health" |
| "an animal requires enough nutrients to survive" |
| "an animal requires nutrients for survival" |
| "an animal requires nutrients to grow and heal" |
| "an animal requires oxygen for to breathe" |
| "an animal requires shelter" |
| "an animal requires warmth for survival" |
| "an animal usually requires a warm body temperature for survival" |
| "an earthquake causes the ground to shake" |
| "an earthquake changes Earth 's surface quickly" |
| "an earthquake usually occurs over a period of 10 to 30 seconds" |
| "an ecosystem contains a large community of living organisms in a particular place" |
| "an ecosystem contains large numbers of living organisms in a particular place" |
| "an ecosystem contains nonliving things" |
| "an egg requires warmth to develop" |
| "an electric car contains an electric motor" |
| "an electric car uses less gasoline than a regular car" |
| "an electrical device requires electricity to turn on" |
| "an electrical insulator slows the flow of electricity" |
| "an electrical insulator slows the transfer of electricity" |
| "an electromagnet contains cylindrical ferrous metal" |
| "an electron microscope creates a picture" |
| "an equinox occurs twice per year" |
| "an exothermic reaction increases the amount of heat" |
| "an incandescent light bulb converts electricity into heat by sending electricity through a filament" |
| "an incandescent light bulb converts electricity into light by sending electricity through a filament" |
| "an inclined plane is used for raising objects" |
| "an island is formed by lava being released on the ocean floor over time" |
| "an island is formed by lava cooling on the ocean floor over time" |
| "an landfill is a source of pollution" |
| "an ocean is a source of heat and moisture for a hurricane" |
| "an organism 's environment affects that organism 's acquired characteristics" |
| "an organism breaking down sugar is a source of carbon dioxide" |
| "an organism breaking down sugar is a source of water" |
| "an organism breaks down sugar to release energy" |
| "an organism is a source of organic material" |
| "an organism is a source of organic matter" |
| "an organism requires energy for growth" |
| "an organism requires energy for repair" |
| "an oven is a source of heat" |
| "an plant requires food for survival" |
| "animal cells can not perform photosynthesis" |
| "animals adapt to their environment" |
| "animals exhale carbon dioxide from their lungs into the air" |
| "animals learn some behaviors from watching their parents" |
| "animals live and feed near their habitats" |
| "animals require water for survival" |
| "animals taste flavors" |
| "animals usually distance themselves from humans" |
| "aquatic animals live in bodies of water" |
| "aquatic plants live in bodies of water" |
| "arctic animals live in an arctic environment" |
| "arteries transport nutrients throughout the body" |
| "as a source of light becomes closer , that source will appear brighter" |
| "as a source of light moves directly overhead of an object , the size of the shadow of that object will decrease" |
| "as ability to preserve food increases , the ability to transport food increases" |
| "as ability to transport food increases around the world , the available types of food in distant locations will increase" |
| "as air pressure decreases , the chance of rain will increase" |
| "as air pressure increases , the reading on a barometer will rise" |
| "as altitude increases , air pressure will decrease" |
| "as altitude increases , the temperature of the air will decrease" |
| "as an object descends into water , the pressure on that object will increase" |
| "as an object moves , the kinetic energy of that object will increase" |
| "as available resources increases , the population of an organism that uses those resources will increase" |
| "as available water decreases , the population of plants will decrease" |
| "as available water in an environment decreases , the amount of available food in that environment will decrease" |
| "as depth increases , pressure will increase" |
| "as distance from a source of light increases , that source of light will appear dimmer" |
| "as distance from an object decreases , that object will appear larger" |
| "as distance from an object decreases , the the pull of gravity on that object increases" |
| "as distance from water decreases , humidity will increase" |
| "as distance to a city decreases , the amount of light pollution will increase" |
| "as distance to an object increases , that object will appear smaller" |
| "as dryness increases in an environment , the available water in that environment will decrease" |
| "as elevation of a place decreases , how much a flood will affect that place will increases" |
| "as energy required for an activity increases , pulse will increase" |
| "as flatness of a leaf increases , the amount of sunlight that leaf can absorb will increase" |
| "as force exerted on an object increases , distance travelled will increase" |
| "as heat and moisture increases , the strength of a hurricane will increase" |
| "as heat increases , a flexible container containing gas will expand" |
| "as heat is transferred from something to something else , the temperature of that something will decrease" |
| "as light pollution increases , seeing the stars will be harder" |
| "as lightness in color of an object increases , the ability of that object to reflect light will increase" |
| "as mass of a celestial body increases , the force of gravity on that planet will increase" |
| "as mileage per galon of gasoline increases , the amount of gasoline used will decrease" |
| "as moisture of an object decreases , the friction of that object against another object will increase" |
| "as number of organisms in a group increases , the chance of survival of each organism will increase" |
| "as population of predators decreases , the population of prey will increase in an environment" |
| "as population of prey decreases , the population of predators will decrease" |
| "as roughness of a surface increases , friction will increase" |
| "as state of matter changes , mass will not change" |
| "as temperature during the day increases , the temperature in an environment will increase" |
| "as temperature in an environment decreases , the amount of water an animal in that environment will lose will decrease" |
| "as temperature in the environment increases , the body temperature of a reptile in that environment will increase" |
| "as temperature increases , the ability of that liquid to dissolve solids will increase" |
| "as the activity of an animal increases , the amount of water in an animal 's body in that environment will decrease" |
| "as the amount of available water decreases , tree-growth rings will become narrower" |
| "as the amount of daylight increases , sunset will occur later in the day" |
| "as the amount of food an animal eats decreases , that organism will become thinner" |
| "as the amount of food an animal eats increases , the weight of that animal will increase" |
| "as the amount of fragrance of a flower increases , the number of pollinators it will attract increases" |
| "as the amount of polluting gasses in the atmoshere increases , the atmospheric temperature will increase" |
| "as the amount of rain increases in an environment , available sunlight will decrease in that environment" |
| "as the amount of rainfall increases in an area , the amount of available water in that area will increase" |
| "as the amount of water in a body of water increases , the water levels will increase" |
| "as the amount of water received by a plant increases , that plant will usually grow" |
| "as the amount that matter vibrates increases , sound produced increases" |
| "as the available water in an environment increases , the populations of organisms in that environment will increase" |
| "as the distance of a location from the North Pole becomes smaller, the amount of daylight received by that location will decrease during the winter" |
| "as the level of water rises , the amount of available land will decrease" |
| "as the mass of an object increases , the force required to push that object will increase" |
| "as the number of eggs laid by an animal increases , the number of eggs that hatch will increase" |
| "as the number of pollinators attracted to a flower increases , the ability of that flower to reproduce will increase" |
| "as the number of sources of food increase in an environment , the population of the organisms will increase in that environment" |
| "as the population of plants decreases , carbon in the atmosphere will increase" |
| "as the population of prey decreases , competition between predators will increase" |
| "as the resistance to something increases , how easilty that something can be done will decrease" |
| "as the roughness of something increases , the friction of that something will increase when its surface moves against another surface" |
| "as the sale of a product decreases , the amount of money made by the person selling that product will decrease" |
| "as the size of a flower increases , the number of pollinators it will attract increases" |
| "as the size of a leaf increases , the amount of sunlight absorbed by that leaf will increase" |
| "as the size of an object appears larger , that object will be observed better" |
| "as the size of an object appears larger , that object will be seen more easily" |
| "as the size of the eyes of an animal increases , the ability of that animal to see will usually increase" |
| "as the smoothness of something increases , the friction of that something will decrease when its surface moves against another surface" |
| "as the supply of food in an environment decreases , the population of animals in that environment will decrease" |
| "as the surface area of a body of water increases , evaporation of that body of water will increase" |
| "as the temperature of a liquid increases , the rate of evaporation of that liquid will increase" |
| "as the temperature of something increases , the intensive properties of that something will not change" |
| "as the thickness of an object increases , the resistance to breaking will increase" |
| "as the thickness of an object increases , the resistance to damage of that object will increase" |
| "as the time a tool lasts increases , the number of tools discarded will decrease" |
| "as the use of a crop increases , the amount of crops planted will increase" |
| "as the use of a resource decreases , the length of time that resource will be available increases" |
| "as the use of alternative fuels increases , the use of gasoline will decrease" |
| "as the weight of an animal decreases , that animal will fly more easily" |
| "as time spent taking a shower decreases , water used will decrease" |
| "as water increases in an environment , the population of aquatic animals will increase" |
| "avoiding predators has a positive impact on prey 's ability to reproduce" |
| "bacteria can cause people to become ill" |
| "bacteria can help digest food in humans" |
| "bacteria cause food poisoning" |
| "bad weather decreases visibility while driving" |
| "baking soda can react chemically with vinegar" |
| "bats can echolocate" |
| "batteries convert chemical energy to electrical energy" |
| "beads of water are formed by water vapor condensing" |
| "bears eat berries" |
| "bears eat insects" |
| "bees convert nectar into honey" |
| "bees eat pollen" |
| "being burried under soil and mud changes peat into coal through extreme heat and pressure in a swamp over a long period of time" |
| "being exposed to heat can cause erosion of rocks" |
| "being stronger usually has a positive impact on an living thing 's health" |
| "being stronger usually has a positive impact on an organism 's health" |
| "binoculars are used for observing distant objects" |
| "biofuel is used to produce electricity by burning" |
| "biofuel releases carbon dioxide into the atmosphere" |
| "birds are a vehicle for spreading the seeds of a plant" |
| "birds build nests in the spring" |
| "birds lay eggs" |
| "birds sometimes eat berries" |
| "birds sometimes eat insects" |
| "birds sometimes eat seeds" |
| "birds with beaks of different shapes eat different foods" |
| "blood absorbs oxygen in the lungs" |
| "bluebirds live in grassy spaces" |
| "boiling is when liquids are heated above their boiling point" |
| "boiling point means temperature above which a liquid boils" |
| "braking can cause skidding" |
| "brass is made of copper and zinc" |
| "break down means change from a whole into pieces" |
| "breaking apart rocks can cause debris" |
| "breaking down an object changes that object 's shape and mass" |
| "breath contains water vapor" |
| "breathing is when a lung converts from oxygen in air into oxygen in blood" |
| "brick is an electrical insulator" |
| "buildings collapsing often cause death" |
| "burning a living thing usually causes harm to that living thing" |
| "burning gasoline is a source of pollution" |
| "burning oil is a source of pollution" |
| "burning wood is used to produce heat" |
| "calculating speed requires knowing distance travelled" |
| "camouflage can be used for hunting for food" |
| "camouflage can be used for hunting for prey" |
| "camouflage is a kind of protection against consumers" |
| "camouflage is a kind of protection against predators" |
| "camouflage is used for hiding by animals against predators" |
| "camouflage is used for hiding by animals from predators" |
| "carbohydrates are made of sugars" |
| "carbon dioxide can be found in the air" |
| "carbon dioxide concentrations in the air have increased over the last decade dramatically" |
| "carbon steel is always magnetic" |
| "carnivores are predators" |
| "carnivores only eat animals" |
| "carpet absorbs sound" |
| "casting an image of an object through a pinhole onto a screen does not require looking directly at the object" |
| "cellular respiration is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy" |
| "cellular respiration is when cells break down food to produce energy" |
| "changes in an environment cause animals to adapt to survive" |
| "changes in an environment cause plants to adapt to survive" |
| "chemical reactions cause chemical change" |
| "chemical reactions cause different substances to form" |
| "chemical splashing can cause harm to the eyes" |
| "chemical splashing sometimes occurs during experiments" |
| "chickens cluck" |
| "chlorophyll is used for absorbing light energy by plants" |
| "clams live at the bottom of the ocean" |
| "classifying is when one sorts something by type" |
| "classifying means grouping materials by their properties" |
| "claws are used to catch prey by some predators" |
| "clear weather means sunny weather" |
| "climate is the usual kind of weather in a location" |
| "clouds are formed by water vapor rising and condensing" |
| "clouds produce rain" |
| "cloudy means the presence of clouds in the sky" |
| "coal is a nonrenewable resource" |
| "coal is used to produce electricity by burning in coal-fire power stations" |
| "coal mine is a source of coal under the ground" |
| "cold environments are usually white in color from being covered in snow" |
| "cold environments contain few organisms" |
| "cold temperatures cause animals to shiver" |
| "coloration is used to find a mate by some animals" |
| "combining two substances chemically causes chemical reactions" |
| "completing a circuit causes electric current to flow through that circuit" |
| "completing a circuit causes electricity to flow through that circuit" |
| "condensation is a stage in the water cycle process" |
| "condensing causes a liquid to form" |
| "conserving resources has a positive impact on the environment" |
| "conserving water can be used for survival in a dry environment" |
| "consumers eat other organisms" |
| "contact between rocks over long periods of time causes rocks to smooth" |
| "cooking causes a chemical reaction" |
| "cooking food requires adding heat energy" |
| "cooking food to proper temperatures protects against food poisoning by killing bacteria and viruses" |
| "cool temperatures cause animals to shiver" |
| "coral lives in the ocean" |
| "cows only eat plants" |
| "cracking something usually has a negative impact on that something" |
| "creating paper requires cutting down trees" |
| "crop rotation has a positive impact on soil quality" |
| "crop rotation is when different crops are planted on a field in different years" |
| "crop rotation renews soil" |
| "crumple means change shape from smooth into compacted by physical force" |
| "cutting down trees has a negative impact on an organisms living in an ecosystem" |
| "cutting down trees in a forest causes the number of trees to decrease in that forest" |
| "cycles of day and night occur once per day" |
| "cycles of freezing and thawing water cause ice wedging" |
| "dairy is a source of Vitamin D" |
| "damming a river can cause a lake to form" |
| "darkness has a negative impact on photosynthesis" |
| "dead organisms are the source of nutrients for decomposers" |
| "dead organisms decay" |
| "dead organisms rot" |
| "decomposer is a kind of role in an ecosystem" |
| "decomposition increases amount of organic matter in soil" |
| "decomposition increases the amount of nutrients in the soil" |
| "decomposition is when a decomposer breaks down dead organisms" |
| "decomposition is when a decomposer recycles nutrients from dead organisms to the soil by eating those dead organisms" |
| "decreasing something negative has a positive impact on a thing" |
| "deep sea animals live deep in the ocean" |
| "denser liquids settle below liquids that are less dense" |
| "density is a measure of mass over volume" |
| "detailed observation of celestial objects requires a telescope" |
| "dew is formed when water vapor condenses over night" |
| "dew is formed when water vapor cools over night" |
| "different organisms reproduce differently" |
| "digestion is when an organism takes in nutrients from food into itself by eating" |
| "digestion is when stomach acid breaks down food" |
| "disguise means change appearance to hide" |
| "dissolving a substance in water causes the water to taste like that substance" |
| "doing chores is a learned characteristic" |
| "down feathers are a thermal energy insulator" |
| "dropping an object into water causes vibrations in the water" |
| "dropping something causes that something to fall" |
| "drought may cause wildfires" |
| "drought means available water decreases in an environment" |
| "dry wood easily burns" |
| "each of the moon 's phases usually occurs once per month" |
| "each season occurs once per year" |
| "eagles eat fish" |
| "eagles eat rabbits" |
| "earthquakes cause rock layers to fold on top of each other" |
| "earthworms create tunnels in soil" |
| "eating food is used to get nutrients by living things" |
| "eating food that contains pesticides can have a negative impact on humans" |
| "echo is when sound reflects off of a surface" |
| "echolocation is when some animals detect objects by hearing echoes by emitting sound" |
| "ecological succession means entire communities in an ecosystem change over time" |
| "electric devices require electrical energy to function" |
| "electrical conduction is when metals conduct electricity through metal" |
| "electrical current running through a wire causes that wire to heat up" |
| "electrical devices convert electricity into other forms of energy" |
| "electrical insulation requires wrapping a conductor in an insulator" |
| "electricity can not flow through an open circuit" |
| "electricity causes less pollution than gasoline" |
| "electricity is made of moving charged particles" |
| "electricity is made of moving charges" |
| "electrocution causes harm to an organism" |
| "electromagnets can be powered by electricity" |
| "endangered means low in population" |
| "erosion causes a river to become deeper and wider" |
| "erosion causes deposition" |
| "erosion of soil has a negative impact on the environment" |
| "ethanol sometimes is made of corn" |
| "evaporation causes amount of water to decrease" |
| "evaporation is a stage in the water cycle process" |
| "evaporation is when water is drawn back up into the air in the water cycle" |
| "evaporation means change from a liquid into a gas by adding heat energy" |
| "exercise has a positive impact on a body 's strength" |
| "exercise has a positive impact on a human 's health" |
| "explosions can cause harm to an organism" |
| "extreme heat and pressure compact sediment into sedimentary rock" |
| "extreme heat and pressure metamorphose rock into metamorphic rock" |
| "extreme temperatures cause an organism 's energy levels to decrease" |
| "eye color is an inherited characteristic" |
| "eyes are used for seeing by animals by sensing light" |
| "farming cause nutrients in the soil to decrease" |
| "farming changes the environment" |
| "fat is used to keep animals warm" |
| "feeders attract animals to a location" |
| "feeling is when an living thing senses through touch" |
| "female birds sit in nests" |
| "ferrous metals contain iron" |
| "fertilizers are a source of pollution" |
| "fire causes burning" |
| "fire causes harm to living things" |
| "fire destroys plants in an environment" |
| "fire gives off light" |
| "fish lay eggs" |
| "flippers are used for moving in water" |
| "flood plains are located near rivers" |
| "flowers are a source of fruit" |
| "flowing liquid can push objects" |
| "fog is formed by water vapor condensing in the air" |
| "folding an object causes that object to change shape" |
| "food is a source of energy for animals" |
| "food is a source of energy for plants" |
| "food spoiling has a negative impact on the health of the animal that eats that food" |
| "force causes the speed of an object to decrease" |
| "force causes the speed of an object to increase" |
| "forming fossil fuels requires decaying vegetation" |
| "fossil fuels are a nonrenewable resource" |
| "fossil fuels are formed by dead organisms over time" |
| "fossil fuels forming occurs over a period of 300000000 years which is considered a very long time to a human" |
| "fossils are formed when layers of sediment cover the remains of organisms over time" |
| "freezing causes a solid to form" |
| "freezing means changing from a liquid into a solid by reducing heat energy" |
| "freezing point means temperature at which a liquid freezes" |
| "freezing point means temperature below which a liquid freezes" |
| "friction acts to counter the motion of two objects when their surfaces are touching" |
| "friction causes the speed of an object to decrease" |
| "friction causes the temperature of an object to increase" |
| "friction is used for stopping a vehicle by brakes" |
| "friction occurs when two object 's surfaces move against each other" |
| "fruit contains seeds" |
| "genes are a vehicle for passing inherited characteristics from parent to offspring" |
| "gills are used for breathing water by aquatic animals" |
| "glaciers cause scratches in rocks" |
| "glaciers melting has a negative impact on the glaicial environment" |
| "good bacteria grow on a human 's skin" |
| "good bacteria grow on the skin" |
| "grass snakes live in grass" |
| "gravitational force causes objects that have mass to be pulled down on a planet" |
| "gravity causes orbits" |
| "gravity causes substances to be pulled down on a planet" |
| "green plants provide food for consumers by performing photosynthesis" |
| "grey clouds appear before precipitation" |
| "grey clouds are a source of precipitation" |
| "habitat destruction causes animals to move to find shelter in another habitat" |
| "harming an animal species causes that animal 's population to decrease" |
| "harming something has a negative effect on that something" |
| "harming something has a negative impact on that something" |
| "having food has a positive impact on an organism 's health" |
| "hawks eat lizards" |
| "heat and pressure change the remains of prehistoric living things into natural gas" |
| "heat can change the state of matter" |
| "heavy rains cause flooding" |
| "height is an inherited characteristic" |
| "herbivores only eat plants" |
| "hibernation is an inherited behavior" |
| "hibernation is used for conserving resources by some animals" |
| "high means great in altitude" |
| "high temperatures can cause an object to combust" |
| "high tide is a stage in the tide cycle process" |
| "hitting an object causes the particles in that object to vibrate" |
| "humans building homes in an ecosystem causes that environment to change" |
| "humans building homes in an environment causes that environment to change" |
| "humans cause pollution" |
| "humans changing an environment sometimes causes that environment to be destroyed" |
| "humans changing animal habitats usually causes harm to those animals" |
| "humans discarding waste in an environment causes harm to that environment" |
| "humans eat crops" |
| "humans moving into an environment usually causes native species to lose their habitats" |
| "humans sometimes eat seeds" |
| "humidity is the amount of water vapor in the air" |
| "hunting means humans kill animals in the wild" |
| "hunting requires seeing prey" |
| "hunting requires sensing prey" |
| "hydropower is when falling water produces electricity" |
| "hydropower requires damming a river" |
| "hypothesis means scientific guess about the cause and effect of an event" |
| "ice wedging is when ice causes rocks to crack by expanding in openings" |
| "if a body of water loses all water then that body of water does not exist any more" |
| "if a body part was burned then that body part was exposed to a lot of heat energy" |
| "if a cell can not specialize then that cell must perform all life functions" |
| "if a flexible container is pushed on then that container will change shape" |
| "if a habitat can no longer support animals then those animals will move to another area" |
| "if a habitat is destroyed then that habitat can not support animals" |
| "if a habitat is removed then that habitat is destroyed" |
| "if a hot object is touches a cold substance then that substance will likely cool" |
| "if a hot substance is touches a cold object then that substance will likely cool" |
| "if a leaf falls off of a tree then that leaf is dead" |
| "if a liquid disappears then that liquid probably evaporated" |
| "if a living thing becomes too cold then that living thing will die" |
| "if a living thing dies then that living thing is dead" |
| "if a magnet is attracted to a metal then that magnet will stick to that metal" |
| "if a mineral can be scratched by a fingernail then that mineral is soft" |
| "if a new predator begins eating prey then the population of that prey will decrease" |
| "if a population decreases to zero then that organism is extinct" |
| "if a substance absorbs solar energy then that substance will increase in temperature" |
| "if a tree falls then sunlight becomes available to the surrounding plants" |
| "if a tree falls then that tree is dead" |
| "if a tree is cut down then that tree will die" |
| "if a tree is located near a sidewalk then the roots of that tree might crack the sidewalk" |
| "if a weed is pulled then that weed is destroyed" |
| "if all members of a species cannot produce offspring then that species will likely become extinct" |
| "if an animal eats another animal then that animal is a carnivore or omnivore or predator" |
| "if an animal hatches from an egg then that animal is born" |
| "if an animal is near a road then that animal might be killed by a car" |
| "if an animal is trained to do something then that something is a learned behavior" |
| "if an animal relies on plants for food then that animal must store enough food to last through the winter" |
| "if an animal takes a resource from another animal then that animal competes for resources successfully" |
| "if an object is blue then that object reflects only blue light" |
| "if an object is close then that object will appear large" |
| "if an object is exposed to a source of heat then that conductor may become hot" |
| "if an object is hot then the surfaces of that object are hot" |
| "if an object is kicked then force is exerted on that object" |
| "if an object reflects a light of a certain color then the object appears to be that color" |
| "if an object reflects light toward the eye then that object can be seen" |
| "if an object reflects more light then that object is more easily seen" |
| "if an object undergoes chemical change then that object will have new chemical properties" |
| "if an organism 's prey moves quickly then that organism may need to move quickly to catch its prey" |
| "if an organism becomes too hot then that organism may die" |
| "if an organism dies then the population of that organism will decrease" |
| "if an organism makes food for itself then that organism does not need to eat other organisms" |
| "if battery in an electromagnet is active then the nail in the electromagnet will become magnetic" |
| "if electricity flows along more than one pathway then the circuit is parallel" |
| "if food is cooked then heat energy is added to that food" |
| "if food is not immediately used by the body for energy then that food will be stored for future use" |
| "if fossils of a water animal or plant are found in a place then that place used to be covered by water in the past" |
| "if gas is heated then that gas will rise" |
| "if it is night then the sun has set" |
| "if liquid is boiling then that liquid is hot" |
| "if members of a species are born then the population of that species increases" |
| "if one electrical conductor contacts another electrical conductor then electricity will flow through both conductors" |
| "if one mineral can scratch another mineral then that other mineral is softer than that one mineral" |
| "if seeds stick to the fur of an animal then that seed will be transported by the animal" |
| "if some nutrients are in the soil then those nutrients are in the food chain" |
| "if something absorbs something else then that something will contain that something else" |
| "if something contains a large amount of magnetic material then that something will attract magnets" |
| "if something is a raw material in a process then that something is required for that process" |
| "if something is a raw material then that something comes directly from a source" |
| "if something is in the sunlight then that something will absorb solar energy" |
| "if something is outside during the day then that something will receive sunlight" |
| "if the amount of available food and water decreases in an environment then animals may leave that environment to find food and water" |
| "if the atmospheric temperature rises then the glaciers will melt" |
| "if the population of an organism increases then the ecosystem may become overpopulated with that organism" |
| "if too much heat is transferred to an object then that object may burn" |
| "if two animals eat the same prey then those animals compete for that pey" |
| "if two animals have the same food source then those two animals compete for food" |
| "if two equal forces in opposite directions act on an object then that object will stay in the same place" |
| "if two objects have the same charge then those two materials will repel each other" |
| "if weather is stormy then there is a greater chance of rain" |
| "illness has a negative impact on an organism 's health" |
| "incomplete metamorphosis is when an insect reaches the adult stage without being a pupa" |
| "inheriting is when a inherited characteristic is copied from parent to offspring by DNA" |
| "inheriting is when a inherited characteristic is passed from parent to offspring by DNA" |
| "inheriting is when a inherited characteristic is passed from parent to offspring by genetics" |
| "ink is used for hiding from predators by octopuses" |
| "insects can have a negative impact on crops" |
| "inventing a tool allows that tool to be used" |
| "iron is always magnetic" |
| "iron nails are made of iron" |
| "jet streams may deflect the air masses moved by the prevailing westerlies" |
| "kilometers km are a unit used for measuring distance generally used for values between 1 and 50000000" |
| "lack of food causes starvation" |
| "landfills have a negative impact on the communities" |
| "landfills have a negative impact on the environment" |
| "landslides often occur on mountains" |
| "large fins can be used to move quickly through water" |
| "large trees block sunlight from reaching the ground" |
| "lava is found above the ground" |
| "light can travel through a vacuum" |
| "light enters the eye through the pupil" |
| "lighting a candle causes that candle to burn" |
| "lightning can cause a forest fire" |
| "limestone is formed by water evaporating from a solution of water and minerals" |
| "live birth means developing inside the mother instead of an egg" |
| "living in an environment causes an organism to adapt to that environment" |
| "living things all require energy for survival" |
| "living things can all reproduce" |
| "living things live in their habitat" |
| "living things require respiration to use energy" |
| "living things require water for survival" |
| "living underground can be used for hiding from predators" |
| "lizards eat insects" |
| "long ears are used for releasing heat by a jackrabbit" |
| "looking directly at an eclipse of the Sun causes harm to the eyes" |
| "loss of resources has a negative impact on the organisms in an area" |
| "magma is found below the ground" |
| "magnetic attraction pulls two objects together" |
| "magnetism can cause objects to repel each other" |
| "magnetism does not require contact between objects to act" |
| "magnifying glass is used to see small things by making objects appear bigger" |
| "magnifying makes seeing small things easier through using a microscope" |
| "mammals give birth to live young" |
| "many vehicles emit pollution into the air" |
| "mass is a measure of the amount of matter in an object" |
| "matter in the liquid state drips" |
| "matter is made of molecules" |
| "matter vibrating can cause sound" |
| "matter with variable volume and shape assumes the shape and size of its entire container" |
| "meadow voles eat insects" |
| "meadow voles eat plants" |
| "measuring the hardness of minerals requires scratching those materials" |
| "mechanical weathering is when rocks are broken down by mechanical means" |
| "medicine can cause people to have bad reactions" |
| "melting is when solids are heated above their melting point" |
| "melting means changing from a solid into a liquid by adding heat energy" |
| "melting point means temperature above which a solid melts" |
| "melting point means temperature at which a solid melts" |
| "metal is a nonrenewable resource" |
| "metal is a thermal conductor" |
| "metal is an electrical energy conductor" |
| "metal is sometimes magnetic" |
| "metamorphosis is a stage in the life cycle process of some animals" |
| "metamorphosis is when an animal changes from an immature form to an adult form" |
| "meters m are a unit used for measuring distance generally used for values between 1 and 1000" |
| "mice live in in holes in the ground in fields" |
| "microorganisms cause food to spoil" |
| "microscope is used to see small things by making them appear bigger" |
| "migration is an instinctive behavior" |
| "migration is when animals move themselves from a cooler climate to a warmer climate for the winter" |
| "migration is when animals move to different locations in an annual cycle" |
| "milliliters mL is a unit used for measuring volume generally used for values between 1 and 1000" |
| "mimicry is used for avoiding predators by animals by camouflaging as a dangerous animal" |
| "minerals are formed from magma cooling" |
| "mining changes an ecosystem" |
| "moist means high in moisture" |
| "molecules vibrating can cause sound" |
| "most animals avoid bad odors" |
| "most canyons are formed by flowing rivers through erosion over long periods of time" |
| "most chloroplasts are found in the leaves of a plant" |
| "most predators live in the same environment as their prey" |
| "most predators live near the same environment as their prey" |
| "motion is a source of kinetic energy in an object" |
| "mountains are formed by plate tectonics" |
| "mountains are formed by volcanoes" |
| "moving an object from a cool place to a warm place causes the object 's temperature to increase" |
| "moving changes position" |
| "moving changes stored energy into motion and heat" |
| "muscles pull bones to move the bones" |
| "musical instruments make sound when they are played" |
| "national parks limit hunting" |
| "natural disasters can cause animals to leave an environment" |
| "natural events usually cause changes to Earth 's surface" |
| "natural gas is a nonrenewable resource" |
| "natural gas is a source of heat by burning" |
| "natural magnetism is used for pointing north by a compass" |
| "nature is the source of natural resources" |
| "nearly all fossils are found in sedimentary rock" |
| "nectar is used for attracting pollinators by plants" |
| "nerves are made of nerve cells" |
| "nerves can be used to feel heat and pressure on the skin" |
| "nervous system is an electric conductor" |
| "new land can be formed by volcanoes erupting by lava cooling" |
| "no light shines through an opaque object" |
| "nocturnal predators hunt during the night" |
| "non-contact forces can affect objects that are not touching" |
| "nuclear reactions in stars causes stars to produce light" |
| "nutrients are a source of energy for living things" |
| "objects made of glass cause refraction of light" |
| "oceans contains most of earth 's water" |
| "oceans cover 70% of the surface of the earth" |
| "octopuses releasing ink into the water causes predators to have difficulty seeing the octopus" |
| "offshore oil platforms might cause oil to leak into the water" |
| "offspring receive genes from their parents through DNA" |
| "oil is a nonrenewable resource" |
| "oil is a source of energy" |
| "oil is a source of gasoline" |
| "omnivores are predators" |
| "omnivores eat plants" |
| "one day is equal to 24 hours" |
| "one year is equal to 365 days" |
| "organisms can be preserved in sedimentary rock" |
| "organisms live in their habitat" |
| "painting an object a color causes that object to be that color" |
| "panting is when an animal hangs its tongue out of its mouth to adjust to hot temperatures" |
| "paper is recyclable" |
| "pasteurization reduces the amount of bacteria in milk" |
| "peat is made of decaying vegetation compacted by soil in a swamp over a long period of time" |
| "pencil lead contains mineral graphite" |
| "performing lab expiriments accurately requires understanding all directions beforehand" |
| "phase changes do not change mass" |
| "phloem transports materials through the plant" |
| "photosynthesis makes energy for the plant by converting carbon dioxide, water, and sunlight into carbohydrates" |
| "photosynthesis makes food for the plant by converting carbon dioxide, water, and sunlight into carbohydrates" |
| "photosynthesis means green plants convert from carbon dioxide, water, and solar energy into oxygen for themselves" |
| "photosynthesis means producers convert from carbon dioxide, water, and solar energy into food for themselves" |
| "planets orbit stars" |
| "plant cells can perform photosynthesis" |
| "plant reproduction requires pollination" |
| "plant requires seed dispersal for reproduction" |
| "planting native plants has a positive impact on an ecosystem" |
| "planting trees has a positive impact on an ecosystem" |
| "plants absorb nutrients from soil into themselves through their roots" |
| "plants are a source of biofuel" |
| "plants are a source of fibers" |
| "plants are a source of oxygen through photosynthesis" |
| "plants are the source of fruit" |
| "plants are the source of spices" |
| "plants control the amount of water in their leaves through transpiration" |
| "plasma is formed by electrons separating from atoms in stars" |
| "plastic is a nonrenewable resource" |
| "plucking a string can cause that string to vibrate" |
| "pluto has not cleared its orbit" |
| "poison causes harm to living things" |
| "poisonous darts are used for defense by sea anemones" |
| "polar bears live in cold environments" |
| "pollination is when wind carry pollen from one flower to another flower" |
| "pollination requires pollinating animals" |
| "polluting means something poisonous is added to an environment causing harm to the environment" |
| "pollution is a source of pollutants" |
| "pollution is when humans pollute the environment with pollutants" |
| "potential energy changes to kinetic energy through motion" |
| "pouring water onto soil causes that soil to wash away" |
| "precipitation is when hail fall from clouds to the ground" |
| "precipitation is when rain fall from clouds to the Earth" |
| "precipitation is when snow fall from clouds to the Earth" |
| "precipitation is when water falls from the sky" |
| "predators eat other animals" |
| "predators eat prey" |
| "preferences are generally learned characteristics" |
| "preparing for a storm requires predicting the occurrence of that storm" |
| "processes sometimes produce waste products" |
| "producer is a kind of role in an ecosystem" |
| "producer is a kind of role in the food chain process" |
| "producing light is used for attracting prey by some deep sea animals" |
| "protein is used to repair cells by the human body" |
| "pushing a button sometimes completes a circuit" |
| "pushing an object requires force" |
| "pushing on the pedals of a bike cause that bike to move" |
| "quartz scratches glass easily" |
| "rabbits eat plants" |
| "raccoons eat garbage" |
| "raccoons eat waste" |
| "radiation is when heat is transferred through waves" |
| "rain is a source of water" |
| "rainfall is the amount of rain an area receives" |
| "recyclable means a material can be recycled" |
| "recycling has a positive impact on the environment" |
| "recycling nonrenewable resources has a positive impact on the conservation of those resources" |
| "recycling resources has a positive impact on the conservation of those resources" |
| "recycling resources has a positive impact on the environment" |
| "reducing bacteria in food prevents illness in people" |
| "refracting sunlight causes light to split into different colors" |
| "refraction causes something to look different" |
| "refraction is when light bends" |
| "remora fish eat food by attaching themselves to sharks and eating the food left behind" |
| "renewable resources can be used over again" |
| "reproduction is a stage in the life cycle process" |
| "reproduction is when an organism passes genetic information from itself to its offspring" |
| "reproduction occurs during adulthood" |
| "reproduction produces offspring" |
| "reptiles lay eggs" |
| "rest has a positive impact on a health" |
| "riding a bike does not cause pollution" |
| "rock is made of minerals" |
| "rocks are a source of shelter for small animals in an environment" |
| "rocks often contain large amounts of metal" |
| "rocks sometimes contain aluminum" |
| "rocks sometimes contain iron" |
| "roots anchor plants into the soil" |
| "roots are a vehicle for absorbing water and nutrients from soil into the plant" |
| "rubber is an thermal insulator" |
| "runoff contains fertilizer from cropland" |
| "runoff contains pesticides from cropland" |
| "runoff is when cropland water enters bodies of water" |
| "safety goggles are used for protecting the eyes during experiments" |
| "sand dunes are made of sand" |
| "scavengers eat dead organisms" |
| "scientists make observations" |
| "scraping an object may cause small particles to break off of that object" |
| "seals every year return to the same beaches to give birth" |
| "seasonal changes are made in response to changes in the environment" |
| "seasons cause change to the environment" |
| "seconds are used to measure time" |
| "sediment is formed by weathering" |
| "sedimentary rocks are formed from sediment compacting together" |
| "seed dispersal has a positive impact on a plant 's reproduction" |
| "seed dispersal has a positive impact on a plant" |
| "seed dispersal is when the seeds of a plant are moved from the plant to a new environment" |
| "seed dispersal is when the seeds of a plant are spread from the parent plant to another area" |
| "seed production requires pollination" |
| "seeds may sprout when buried in soil" |
| "seeing is used for sensing visual things" |
| "sending electricity through a conductor causes electric current to flow through that conductor" |
| "sending electricity through a conductor causes electricity to flow through that conductor" |
| "shale can be metamorphosed into slate by increased pressure" |
| "sharp beaks are a kind of adaptation for catching prey" |
| "shedding is when an animal loses hair" |
| "shelter can protect animals from weather" |
| "shelter can protect humans from weather" |
| "shelter is used for protection by animals against weather" |
| "shiny things reflect light" |
| "shivering is when an animal creates heat by shaking to keep the body warm" |
| "skeletal system is made of bones" |
| "skidding causes friction" |
| "skidding causes speed to decrease" |
| "skills are learned characteristics" |
| "skin is used for protecting the body from harmful substances" |
| "sleet is made of ice" |
| "slope is a measure of the difference in elevation between one part of the land and another part of the land" |
| "smell is used for finding food by some animals" |
| "smoking causes direct damage to the lungs" |
| "snow falls during the winter in some environments" |
| "snow falls during the winter in the arctic environment" |
| "snowy means a large amount of snow" |
| "soil contains nutrients for plants" |
| "soil erosion is when wind move soil from environments" |
| "soil is a renewable resource for growing plants" |
| "soil is formed by rocks eroding" |
| "soil is formed by weathering" |
| "soil loss causes grooves in soil" |
| "solar energy is a renewable resource" |
| "solar energy is an inexhaustible resource" |
| "some adult animals lay eggs" |
| "some animals live in zoo exhibits" |
| "some animals move quickly to escape predators" |
| "some animals shed fur in warm weather" |
| "some birds are predators" |
| "some birds live in forests" |
| "some crickets live in forests" |
| "some deep lakes are formed by glaciers" |
| "some flowers become fruits" |
| "some hares live in fields" |
| "some humans live in houses" |
| "some light bulbs convert electricity into light and heat energy" |
| "some lizards live in desert habitats" |
| "some predators move quickly to catch prey" |
| "some rabbits live in forests" |
| "some raccoons live in hollow logs" |
| "something in a cold place becomes cold" |
| "something reusable can be used more than once" |
| "sometimes piles of rock are formed by melting glaciers depositing rocks" |
| "sometimes weathering rounds rocks" |
| "sometimes weathering smooths rocks" |
| "sonar is used to find the location of an object" |
| "sound can be used for communication by animals" |
| "sound can travel through air" |
| "special tissues in plants transport minerals throughout the plant" |
| "specialized tissues at the ends of plant stems are used for growing taller by plants" |
| "speed is a measure of distance travelled divided by time" |
| "speed is a measure of distance travelled over time" |
| "speed is a measure of how fast an object is moving" |
| "squirrels eat edible plants" |
| "squirrels gather nuts in the autumn to eat during the winter" |
| "stalactites are formed by deposition" |
| "stars appear to move relative to the horizon during the night" |
| "steam is a kind of water above 100 degrees celsius" |
| "stopped means no speed" |
| "storms can cause a landslide" |
| "storms cause bodies of water to increase amount of water they contain" |
| "strumming a string can cause that string to vibrate" |
| "studying a soil sample means studying the microorganisms in that soil" |
| "sugar causes food to taste sweet" |
| "sugar dissolves in water when they are combined" |
| "sugars are transported from the leaves to the roots of a plant" |
| "summer is when a hemisphere is tilted towards the sun" |
| "sunlight and rain can cause a rainbow" |
| "sunlight contains ultraviolet light" |
| "sunlight produces heat" |
| "sweat cools a body" |
| "sweat is used for adjusting to hot temperatures by some animals" |
| "swimming is when humans can move in water" |
| "tadpole changes into a frog" |
| "tapping two objects together causes the particles in those objects to vibrate" |
| "tearing an object changes that object 's shape" |
| "tearing means changing a whole into pieces" |
| "tectonic plates being pushed together causes earthquakes" |
| "telephones convert sound energy into electrical energy" |
| "temperature changing can cause phase changes" |
| "temperature is a measure of heat energy" |
| "the Alps were formed by rock folding" |
| "the Appalachians were formed by rock folding" |
| "the Earth absorbs more energy than it loses" |
| "the Earth being tilted on its axis causes ones side of the Earth to receive less energy from the Sun than the other side" |
| "the Earth being tilted on its axis causes seasons" |
| "the Earth contains many ecosystems" |
| "the Earth revolves around the sun" |
| "the Earth revolving around the Sun causes the seasons to change on its axis" |
| "the Earth revolving around the Sun causes the seasons to occur on its axis" |
| "the Earth revolving around the sun causes stars to appear in different areas in the sky at different times of year" |
| "the Earth rotates on its axis on its axis" |
| "the Earth rotating on its axis causes stars to appear to move across the sky at night" |
| "the Earth rotating on its axis causes the sun to appear to move across the sky during the day" |
| "the Grand Canyon was formed by the Colorado River flowing over long periods of time" |
| "the Great Lakes were formed by glaciers moving over the ground" |
| "the Himalayas were formed by rock folding" |
| "the Moon completes a lunar cycle over a period of 29 days" |
| "the North Star does not move in the sky in the Northern Hemisphere each night" |
| "the Sun is the star that is closest to Earth" |
| "the ability to access resources has a positive impact on an organism 's survival" |
| "the ability to acquire resources has a positive impact on an organism 's survival" |
| "the ability to find resources has a positive impact on an organism 's survival" |
| "the amount of daylight is greatest in the summer" |
| "the amount of daylight is greatest on the summer solstice" |
| "the amount of daylight is least in the winter" |
| "the amount of daylight is least on the winter solstice" |
| "the arctic environment is cold in temperature from being at a northern lattitude below 0 degrees celsius during most of the year" |
| "the arctic environment is covered in snow" |
| "the arctic environment is white in color from being covered in snow" |
| "the atmosphere is made of 78% nitrogen" |
| "the breaking down of food into simple substances occurs in the digestive system" |
| "the cell membrane provides support for a cell" |
| "the cells of multicellular organisms can specialize" |
| "the circulatory system brings oxygen from the lungs to the rest of the body" |
| "the circulatory system carries oxygen from the digestive and respiratory systems to the rest of the body" |
| "the circulatory system transports blood throughout the body" |
| "the cocoons being created occurs during the the pupa stage in a life cycle" |
| "the color of an object can be discovered by looking at that object" |
| "the color of fur is an inherited characteristic" |
| "the coloration of fur is an inherited characteristic" |
| "the colors of the parts of an organism are inherited characteristics" |
| "the composition of something can be used to identify that something" |
| "the condition of the parts of an organism are acquired characteristics" |
| "the continental shelf is located near the shore" |
| "the crust is a layer of the Earth" |
| "the decrease of something required by an organism has a negative impact on that organism 's survival" |
| "the digestive system breaks food into nutrients for the body" |
| "the digestive system digests food for the body" |
| "the earth has more mass than the moon" |
| "the excretory system removes waste from the body" |
| "the first quarter phase of the moon occurs after the new moon" |
| "the floating arrow on a compass always points towards the north" |
| "the formation of peat occurs at the bottom of swamps" |
| "the gravitational pull of the Moon on Earth 's oceans causes the tides" |
| "the greenhouse effect is when carbon in the air heats a planet 's atmosphere" |
| "the heart is mostly made of muscle" |
| "the increase of something required by an organism has a positive impact on that organism 's survival" |
| "the kidney removes byproducts from the blood" |
| "the length of the hair of an animal is an acquired characteristic" |
| "the looseness of soil has a positive impact on a plant 's roots' growth in that soil" |
| "the looseness of soil increases the amount of oxygen in that soil" |
| "the lunar surface contains many craters" |
| "the mantle is a layer of the Earth" |
| "the mantle is located just below Earth 's crust" |
| "the mass of a planet causes the pull of gravity on that planet" |
| "the moon 's surface contains flat areas" |
| "the moon 's surface contains highlands" |
| "the moon 's surface contains many craters" |
| "the moon does not contain water" |
| "the moon is the celestial object that is closest to the Earth" |
| "the moon orbiting the Earth approximately occurs 13 times per year" |
| "the moon orbiting the Earth causes the phases of the moon" |
| "the moon orbits the Earth" |
| "the moon reflects sunlight towards the Earth" |
| "the moon rising occurs once per day" |
| "the nervous system sends observations in the form of electrical signals to the rest of the body" |
| "the number of body parts of an organism is an inherited characteristic" |
| "the number of rings in a tree trunk can be used to estimate the age of the tree" |
| "the ocean contains large amounts of salt water" |
| "the phases of the Moon change the appearance of the Moon" |
| "the pupa stage is a stage in the metamorphosis process of some animals" |
| "the respiratory system takes in oxygen from the air" |
| "the respiratory system transfers oxygen to the circulatory system" |
| "the shape of an object can be discovered through feeling that object" |
| "the shape of body parts is an inherited characteristic" |
| "the skeletal system protects internal organs" |
| "the skin is the largest organ in the human body" |
| "the slope of the land causes a river to flow in a particular direction" |
| "the smell of rotting meat attracts flies" |
| "the solar system contains the moon" |
| "the stars in the night sky are very far away from the Earth" |
| "the summer solstice is on June 21st in the northern hemisphere" |
| "the sun causes water to evaporate more quickly by adding heat" |
| "the sun is a source of heat called sunlight" |
| "the sun is a source of light called sunlight" |
| "the sun is located directly overhead at noon" |
| "the sun is the source of energy for life on Earth" |
| "the sun is the source of energy for physical cycles on Earth" |
| "the sun is the source of solar energy called sunlight" |
| "the sun rising and setting causes cycles of day and night" |
| "the sun sets in the west" |
| "the sun setting occurs once per day" |
| "the sun transfers heat energy from itself to the planets through sunlight" |
| "the sun transfers solar energy from itself to the Earth through sunlight" |
| "the surface of the Earth contains mountains" |
| "the surface of the Moon contains mountains" |
| "the thickness of the parts of an organism is an inherited characteristic" |
| "the tide cycle regularly occurs twice per day" |
| "the top layer of soil contains the most nutrients" |
| "the type of material through which sound passes changes the speed at which sound travels" |
| "the type of seed of a plant is an inherited characteristic" |
| "the vanes rotating in an electric fan causes air to move" |
| "the volume of an object can be used to describe the size of that object" |
| "the winter solstice is on December 21st in the northern hemisphere" |
| "the winter solstice is on June 21st in the southern hemisphere" |
| "thermal conduction is when materials conduct heat through those materials" |
| "thick feathers can be used for keeping warm" |
| "tidal energy can be used to produce electricity" |
| "tidal range is a measure of the vertical distance from high tide to low tide" |
| "timber companies cut down trees" |
| "tinted lenses reflect ultraviolet rays" |
| "touch can be used for detecting texture" |
| "transpiration is when water vapor moves from leaves into the atmosphere" |
| "transpiration usually happens in the leaves of a plant" |
| "treating water is used to remove harmful substances before drinking" |
| "trees are a renewable resource" |
| "tuna eat fish" |
| "tunnels in soil loosen that soil" |
| "two females can not usually reproduce with each other" |
| "uneven heating causes convection" |
| "uneven heating of the Earth 's surface cause wind" |
| "using a car causes pollution" |
| "using less resources usually causes money to be saved" |
| "using tools is a learned characteristic" |
| "usually coral lives in warm water" |
| "usually craters on planets are formed by asteroids impacting that planet or moon 's surface" |
| "usually plants die or become dormant during the winter" |
| "usually plants store the food they produce for future use" |
| "vaccines can help prevent illness" |
| "veins transport nutrients throughout the body" |
| "vibrating matter can produce sound" |
| "volcanoes are often found under oceans" |
| "warm-weather organisms live in warm climates" |
| "water absorbs solar energy in the water cycle" |
| "water causes the most soil and rock erosion" |
| "water flows down a slope" |
| "water is a renewable resource" |
| "water is an electrical conductor" |
| "water is in the gas state , called water vapor , for temperatures between 100 and 100000000000 F" |
| "water is in the solid state , called ice , for temperatures between 0 and 0 F" |
| "water is often brackish in an estuary" |
| "water vapor condensing in clouds causes rain" |
| "water vapor cooling causes that water vapor to condense" |
| "water vapor is a kind of water above 100 degrees celsius" |
| "water vapor is found in the atmosphere" |
| "wax is an electrical energy insulator" |
| "wax is an electrical insulator" |
| "waxy leaves are used for storing water by some plants" |
| "weathering means breaking down surface materials from larger whole into smaller pieces by weather" |
| "weathering usually occurs over a period of many years" |
| "webbed feet are used for moving faster through water by aquatic animals" |
| "when a body of water receives more water than it can hold , a flood occurs" |
| "when a cooler object touches a warmer object , thermal conduction occurs" |
| "when a gas in an open container evaporates, that gas spreads out into the air" |
| "when a habitat can support living things , living things can live in that habitat" |
| "when a hibernating frog emergest from mud , that frog has ended its hibernation" |
| "when a hurricane moves over land , that hurricane will decrease in strength" |
| "when a mineral is rubbed on a streak plate , some of the material breaks off and forms a powder" |
| "when a plant grows , the number of the leaves of that plant may increase" |
| "when a river floods , that river deposits sediment in flood plains" |
| "when a sound is produced inside of a room , there is sometimes an echo after the sound" |
| "when a switch in a simple series circuit is closed , electricity will flow through the circuit" |
| "when an animal eats or drinks something , that animal tastes that something" |
| "when an animal sheds its fur , its fur becomes less dense" |
| "when an electrical circuit is working properly , electrical current runs through the wires in that circuit" |
| "when an electrical conductor is plugged into an outlet , a circuit is completed" |
| "when available resources decrease in an environment , organisms have to conserve those resources" |
| "when both a dominant and recessive gene are present , the dominant trait will be visible" |
| "when electricity flows to a light bulb , the light bulb will come on" |
| "when electricity flows to a light bulb , the light bulb will turn on" |
| "when light enters the eye through the pupil , that light falls on the retina" |
| "when light hits a reflective object , that light bounces off that object" |
| "when pollen sticks to a hummingbird , that pollen will move to where the hummingbird moves" |
| "when sound reaches the ear , that sound can be heard" |
| "when the body is hot , sweat is produced to cool the body" |
| "when the needle of a compass lines up with Earth 's magnetic poles , the needle points north" |
| "when the season changes , the amount of daylight will change" |
| "when the seasons change from the summer to the fall , the amount of daylight will decrease" |
| "when water freezes , that water expands" |
| "white blood cell destroys pathogens in the body" |
| "wildfire is when a forest catches fire" |
| "wind and rain cause erosion" |
| "wind carries dirt from one place to another place" |
| "wind carries sand from one place to another place" |
| "wind causes erosion" |
| "wind is a renewable resource" |
| "wind is a source of energy" |
| "wind is an inexhaustible resource" |
| "wind is used for producing electricity" |
| "windy means high wind speeds" |
| "winter in a hemisphere occurs when the Pole located in that hemisphere is tilted away from the Sun" |
| "winter in the Northern Hemisphere is during the summer in the Southern Hemisphere" |
| "winter is when a hemisphere is tilted away from the sun" |
| "wiring requires an electrical conductor" |
| "wood is a renewable resource" |
| "wood is an electrical energy insulator" |
| "wood is an thermal energy insulator" |
| "xylem carries water from the roots of a plant to the leaves of a plant" |
| "xylem transports materials through the plant" |
| "young amphibians breathe through gills" |
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