text stringlengths 47 621 |
|---|
Question: Fossils of clam shells were found in the Appalachian Mountains. Which of these statements best explains why the clam shells were found in the Appalachian Mountains?
Answer: The mountain range was once under water. |
Question: When a formula unit of magnesium sulfide, MgS, is separated into magnesium and sulfur particles, the particles are called
Answer: ions. |
Question: Which action is an example of an exothermic process?
Answer: making ice cubes |
Question: Which best explains why some reptiles and amphibians lay an abundance of eggs?
Answer: It increases the chance of some eggs surviving to hatch. |
Question: Which is the best example of recycling?
Answer: using aluminum cans to make new products |
Question: When two objects are touching, heat is transferred from the warmer object to the cooler one by
Answer: conduction. |
Question: Genes code for specifically structured
Answer: proteins. |
Question: What is the repeating monomer of a DNA molecule?
Answer: nucleotide |
Question: The range of all forms of radiant energy is called the
Answer: electromagnetic spectrum. |
Question: Which of the following is one reason that quartz is classified as a mineral?
Answer: It has a specific crystal structure. |
Question: Which of the following activities is the best example of instinctive behavior in an animal?
Answer: A newly hatched sea turtle walks toward the ocean. |
Question: If wolves prey on deer for food, what will most likely happen to the deer population if wolves are removed from an area where deer live?
Answer: The population of deer will increase. |
Question: Which is a feedback mechanism the human body uses to maintain homeostasis?
Answer: perspiring to lower the body temperature |
Question: Changes to Earth's surface can happen slowly or quickly. Which of these changes happens the most quickly?
Answer: a storm moving a sandbar |
Question: What event happens in a daily cycle?
Answer: high and low tides |
Question: The burning of fossil fuels has added pollutants that contain sulfur atoms to the air. These pollutants have contributed to which of the following?
Answer: acid rain |
Question: A scientist was examining a large boulder that was covered with lichens (a combination of fungi and algae). He chipped a piece of the rock and placed it under a microscope. He observed that the surface of the rock was breaking down underneath the lichen. Which was the scientist most likely observing?
Answer: the effects of chemical weathering |
Question: Which organism belongs in the kingdom Protista?
Answer: paramecium |
Question: How is the structure of an atom best described?
Answer: a positive core surrounded by mostly empty space |
Question: What do producers need to make food?
Answer: sunlight, water, and carbon dioxide |
Question: Fish can live in lakes that are frozen because liquid water remains below the ice at the surface. Which of these describes a property of water that allows some liquid water to remain in frozen lakes?
Answer: Water is less dense as a solid than as a liquid. |
Question: A certain disease of the spinal cord can be passed on from a dog to its offspring. This disease can result in the dog's muscles becoming weak, leading to paralysis. This is an example of
Answer: an inherited disease. |
Question: Paula determines a property of a marble using a balance and a graduated cylinder. What property is Paula most likely determining by using both tools?
Answer: density |
Question: Why do satellites and spacecraft launched from Earth need to reach a specific speed to escape Earth's surface?
Answer: to overcome Earth's gravitational force |
Question: Which of these is a nonliving part of a forest?
Answer: Soil |
Question: Which change increases the rate of a chemical reaction?
Answer: increasing the reaction temperature |
Question: Which characteristic is found ONLY in mammals?
Answer: glands that make milk |
Question: The relationship between an owl and a mouse is a
Answer: predator-prey relationship. |
Question: The heart, veins, arteries, and capillaries make up which organ system?
Answer: circulatory |
Question: Some kinds of fish live most of their lives in salt water but lay their eggs in freshwater. Their ability to survive in different environments is an example of
Answer: adaptation |
Question: Which of the following statements applies to all states of matter?
Answer: Matter is made up of particles called atoms. |
Question: Which process in the water cycle returns water from the surface of Earth to the atmosphere?
Answer: evaporation |
Question: Which of the following organisms have the greatest effect on an ecosystem because of the changes they make to their environment?
Answer: beavers building a dam across a stream |
Question: Which inventor had the greatest impact on the development of artificial light?
Answer: Thomas Edison |
Question: Mounds and ridges in the Snake Range area of Nevada are composed of boulders, sand, and gravel. These landforms were most likely formed by
Answer: melting glaciers. |
Question: Noah studied different systems in the human body. Which best describes a function of veins in the circulatory system?
Answer: carrying blood from the body to the heart |
Question: A genetic mutation has caused the fur color of field mice to contrast with their environment. This type of mutation will most likely
Answer: harm the mice. |
Question: Ella has several wooden blocks. When Ella holds the blocks in her hand, she feels that they are rough. Which term best describes what Ella feels?
Answer: an observation |
Question: Which is most likely a cancer treatment?
Answer: a drug that kills only rapidly dividing cells |
Question: What happens to the physical state of water when it freezes?
Answer: expands |
Question: When electric current flows through the metal filament of a light bulb, electrical energy is converted to
Answer: heat and light energy. |
Question: At night, the Moon is the brightest object in the sky. Where does the Moon's light come from?
Answer: The Moon reflects light from the Sun. |
Question: Strong winds have the ability to uproot large trees in a wooded area. Which of these organisms would most likely benefit from this change in a habitat?
Answer: a plant that needs sunlight to grow |
Question: Residential construction is expanding in Florida. The expansion has caused fragmentation of habitats. One of the results of the increased construction is a decrease in the number of large predators such as the coyote, black bear, and panther. Which will be the most immediate local result of this fragmentation?
Answer: increase in population of prey species |
Question: Which of these resources is renewable?
Answer: wind |
Question: Which property of air does a barometer measure?
Answer: pressure |
Question: Which measurement represents the mass of an object?
Answer: 35 grams |
Question: The primary function of insulin in our bodies is to
Answer: regulate the amount of glucose in the blood. |
Question: Which type of organism is the best at fixing nitrogen?
Answer: bacteria |
Question: A scientist studies how weathering and erosion can change the shape of a mountain. The scientist needs to collect information over what period of time to gather the most accurate information?
Answer: years |
Question: Many types of organisms live in a meadow. With the introduction of a large, swift-moving predator into the meadow ecosystem, which group of organisms will MOST likely have an advantage of surviving and reproducing?
Answer: rabbits that can run the fastest |
Question: The systems of the human body work together. Which system works with the skeletal system by pulling on the bones to create movement?
Answer: muscular |
Question: Scientists Stanley Miller and Harold Urey sealed water, methane, ammonia, and hydrogen in a flask, to simulate Earth's early environment. They exposed the chemicals to electric charges to simulate lighting. What did the process produce?
Answer: amino acids |
Question: Many birds fly south for the winter. This adaptation is called
Answer: migration |
Question: Air is made up of many gases. Which gas is found in the greatest amount?
Answer: Nitrogen |
Question: Biotic forces can cause changes to the surface of Earth. Which is the best example of living organisms causing weathering?
Answer: Tree seedlings growing and forming cracks in rocks. |
Question: The digestion process begins in which of the following?
Answer: mouth |
Question: Certain fossils can be used to help determine the age of the rock layer in which the fossils are found. Which type of fossil is best to use when making this determination?
Answer: index fossil |
Question: In pea plants, tall is dominant over short. What size pea plants will result when a pure tall plant is crossed with a pure short plant?
Answer: tall plants |
Question: One way animals usually respond to a sudden drop in temperature is by
Answer: shivering |
Question: The continental crust floats on top of the mantle because the crust is
Answer: less dense than the mantle. |
Question: Joanne wants to investigate factors that affect different patterns of the flight of bees. Which step in the scientific method must she follow before forming a hypothesis?
Answer: gather information about flight patterns |
Question: Which set contains kingdoms that contain only heterotrophs?
Answer: Animals, Fungi |
Question: Chromosomes contain the genetic information of an organism. Fruit flies reproduce by sexual reproduction. Most of the cells of a fruit fly have 8 chromosomes. Which statement best explains the source of the chromosomes in a normal fertilized fruit fly egg?
Answer: The sperm cell provides 4 chromosomes and the egg cell provides 4 chromosomes. |
Question: Which weather instrument measures air pressure?
Answer: barometer |
Question: A volcano under the ocean slowly releases lava over time. As the lava is released, it cools and hardens on the ocean floor. Which feature will most likely form from the release and cooling of the lava on the ocean floor over time?
Answer: an island |
Question: The main function of a duck's webbed feet is to help the duck
Answer: swim in water |
Question: Which is a quick process that can form new land near an ocean?
Answer: volcano erupting |
Question: Which of these features of Earth's crust are caused by the shifting of tectonic plates?
Answer: mid-ocean ridges |
Question: Which of the following helps the leaves break down after they have fallen off the tree?
Answer: decomposers |
Question: Where are proteins synthesized?
Answer: ribosomes |
Question: When compared to current average conditions, which term would best describe conditions in Earth's lower atmosphere if greenhouse gases were absent?
Answer: cooler |
Question: Plumes of water vapor have been observed rising from the southern polar region of Enceladus, one of the moons of Saturn. A team of scientists proposed an explanation for the plumes and developed a model. They also published calculations based on their model. These calculations would most likely be used for which purpose in future research?
Answer: evaluating similar events |
Question: If water gets into the crack of a rock and then freezes, the rock will MOST likely
Answer: break apart |
Question: Which organisms form the base of all ecosystems?
Answer: producers |
Question: Martin is writing a report for science class about how the tilt of Earth affects living organisms. Which subject should Martin include in his report that is directly affected by Earth's tilt?
Answer: changing of the seasons |
Question: In what way do transit systems, such as buses, benefit society?
Answer: by reducing the amount of pollution |
Question: Increased nutrient levels in lakes can cause ecological changes that result in the death of many fish. At what point in the hydrological cycle are most nutrients deposited into lakes?
Answer: runoff |
Question: Which of these cell parts contain instructions for the passage of traits from one generation to the next?
Answer: chromosomes |
Question: Which action causes a chemical change?
Answer: leaves being burned in a fire |
Question: Which type of organism would most likely benefit directly from increased levels of CO_{2}?
Answer: tree |
Question: When the lighted half of the Moon faces the Sun and the dark half faces Earth, the phase of the Moon viewed from Earth is called the
Answer: new moon. |
Question: The flower petals of a hydrangea plant change color as the acidity of the soil changes. The color changes are directly related to which factor?
Answer: environmental conditions |
Question: What is significant about the discovery of water on Mars?
Answer: It provides evidence there may be life on Mars. |
Question: A teacher places an item in a box. The item takes the shape of the entire container. This item is most likely
Answer: air. |
Question: In New York State, the shortest period of daylight occurs during which month?
Answer: December |
Question: During which of the processes below does water vapor change to liquid water?
Answer: condensation |
Question: Which technological advancement has done the most to improve the accuracy of weather predictions?
Answer: satellites |
Question: An important rule for students to know when heating a test tube is to
Answer: point the mouth of the test tube away from others. |
Question: How would a drought most likely affect the plants of a grassy plain?
Answer: There would be shorter plants. |
Question: The brain and spinal cord are parts of which body system?
Answer: nervous |
Question: Chromosome mutations involve the deletion or duplication of many genes. The effects of chromosome mutations are often much greater than mutations within a single gene, because chromosome mutations
Answer: can cause abnormal development of the offspring. |
Question: What will most likely result when the jet stream moves south of North Carolina?
Answer: North Carolina will experience cold weather. |
Question: Estuaries in Florida often have mangrove trees growing in them. The roots of the mangrove trees slow the flow of the water, which allows soil particles to settle. If people were allowed to remove the mangrove trees, how would the estuary environment most likely be affected?
Answer: The amounts of nutrients in the water would decrease. |
Question: Which sense can be used to determine an object's ability to reflect light?
Answer: sight |
Question: The North America Nebula is named for its similarity in shape to the North American continent. It was discovered within the Milky Way by astronomer William Herschel in 1790. What was Mr. Herschel most likely observing?
Answer: a cloud of hydrogen gas and dust where stars are born |
Question: Which animals are most likely to carry the seeds found in berries from the parent plant to another area?
Answer: birds |
Question: All rocks are composed of
Answer: minerals |
Question: In some dry areas, large amounts of water have been pumped from underground sources where water has been naturally stored for thousands of years. If the water is not replaced, what type of land feature is most likely to result?
Answer: desert |
Question: Which scientist studied biology by traveling by ship to different islands observing animal life, and developed a hypothesis about how species change?
Answer: Charles Darwin |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.