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Question: The best example of heat transfer by convection is when
Answer: heat rises in a chimney. |
Question: A worker needs to load a heavy box onto a truck. The worker uses a ramp to move the box because the ramp
Answer: reduces the amount of force applied to the box. |
Question: A fox grows thicker fur as a season changes. This adaptation helps the fox to
Answer: keep warmer |
Question: What is the main source of raw material for the production of plastics?
Answer: petroleum |
Question: The students in an engineering class built a robot that stacks wooden blocks. A built-in computer controls the movement of the robot. The computer in the robot performs a function most similar to which part of the human body?
Answer: brain |
Question: When sugar is heated on a hot plate, it turns into a liquid. When the liquid sugar is cooled, a hard-crystalline substance is formed. This model best demonstrates the formation of
Answer: igneous rocks. |
Question: Which distance is the smallest for which it is most practical to use the light-year as a unit of measurement?
Answer: the distance between the Sun and the center of the Milky Way |
Question: Which of the following devices relies on electromagnetic radiation in the radio wave region of the spectrum for operation?
Answer: cellular telephone |
Question: When a tree suffers from a decreased ability to transport materials within the phloem, what is directly impacted?
Answer: flow of necessary nutrients |
Question: Strontium, barium, and radium are grouped together on the Periodic Table of the Elements because they all have
Answer: similar electron configurations. |
Question: An example of a poor health habit is
Answer: eating candy instead of lunch |
Question: What type of inheritance controls blood types in humans?
Answer: multiple alleles |
Question: Minerals can be identified using hardness, streak, and cleavage because
Answer: minerals have different recognizable properties. |
Question: What is the process that produces energy in the Sun for billions of years?
Answer: fusion |
Question: Which statement is an opinion?
Answer: Life Science is a subject filled with interesting information. |
Question: Decomposers are organisms that obtain their food from dead organisms. Which of these would be classified as decomposers?
Answer: bacteria, fungi |
Question: DNA molecules contain the genetic information that determines the characteristics of a living organism. How do DNA molecules express the genetic information they contain?
Answer: by directing the process of protein synthesis |
Question: Fossil fuels were formed from
Answer: the remains of living things |
Question: Which of the following remains constant in Earth's carbon cycle?
Answer: the total mass of available carbon |
Question: Which invention has technology that helps people keep food fresh for a long period of time?
Answer: refrigerator |
Question: A student is designing a model of the solar system and writing a report. She is trying to be as accurate as possible. Which statement should she include in her report?
Answer: The orbit of Mars is similar to the orbit of Saturn. |
Question: Stacey picks apples and puts them in a basket. When she puts her basket on a scale, the scale reads two kilograms (kg). What property is Stacey measuring?
Answer: weight |
Question: Which feature is a physical property of copper?
Answer: conducts electricity |
Question: Which term describes Earth's orbit around the Sun?
Answer: revolution |
Question: How do the waxy stem covering and needle-shaped leaves improve the ability of a cactus to survive in the desert?
Answer: They reduce the loss of water from the plant to the air. |
Question: Which characteristic of a cell membrane allows it to control materials entering and leaving a cell?
Answer: A cell membrane is semipermeable. |
Question: Which statement about all living organisms is true?
Answer: They have at least one cell. |
Question: The length of daylight changes as the seasons change during the year. What causes these changes in daylight?
Answer: Earth's tilt on its axis |
Question: The populations of black rhinoceroses have been impacted by human interactions to the point of being endangered. Which interaction best explains why the black rhino is now endangered?
Answer: over hunting |
Question: A student had a cup of ice while working outside. After a while, the ice melted because the Sun emits energy in the form of light and
Answer: heat. |
Question: What characteristic of viruses distinguishes them from cells?
Answer: They lack an independent metabolism. |
Question: The energy required to lift an object is supplied by ATP derived from the breakdown of molecules of
Answer: glucose. |
Question: Living cells synthesize long chains of amino acids called proteins. Which substance provides the information needed to correctly sequence the amino acids during protein synthesis?
Answer: DNA |
Question: Which of these makes it possible for hurricanes to form?
Answer: water temperature |
Question: Most types of cacti survive the dry conditions of a desert because they hold water in their stems. This is an example of
Answer: an adaptation. |
Question: High-altitude cirrus clouds are primarily formed from which substance?
Answer: solid ice crystals |
Question: During a lab investigation a scientist heats a solid substance. The scientist observes that the solid has two different melting points. The scientist is able to separate the two resulting liquids. Which statement best classifies the original solid substance?
Answer: It was a mixture. |
Question: Over a long period of time, some flowering plants have become dependent on honey bees to fertilize their seeds. In recent years, a form of mite has infected and killed the honey bees in many areas of the country. Since this has happened, the once bee-dependent plants with the best chance of surviving are those that
Answer: have always attracted many other insects as well as honey bees. |
Question: Which landforms are most like hills but are much taller?
Answer: mountains |
Question: What is the basic unit of life?
Answer: cell |
Question: About how many Earth days does it take the Moon to travel around Earth?
Answer: 27 |
Question: Students studying the atmosphere want to display the percentage of each greenhouse gas as compared to the total amount of greenhouse gases found in the atmosphere. Which representation would be most appropriate for displaying these percentages?
Answer: pie chart |
Question: The Himalayan Mountain chain is the youngest and tallest mountain chain on Earth. Which phenomenon contributed most to this area of continental buildup?
Answer: convergence of continental plates |
Question: A large cold front is moving past the school on a hot, humid summer day. Which best describes the type of weather as the cold front passes by?
Answer: A thunderstorm |
Question: Growth and repair in multicellular organisms are the result of
Answer: cell division |
Question: A girl signals her friend by shining a flashlight on a mirror. Her friend can see the signal because
Answer: light energy can be reflected from one object to another |
Question: If a wooded area is cleared and corn is planted, what will MOST likely happen?
Answer: Animal habitats will be destroyed. |
Question: Warm water contains less dissolved oxygen than colder water. Which population will be most affected by a long period of hot, dry days?
Answer: fish in ponds |
Question: Which of the following is most responsible for the decay of dead organisms?
Answer: microorganisms |
Question: When a book is dropped onto a wooden desk, the molecules in the wood begin to vibrate from the force of the book. Which of these is produced by the vibrations?
Answer: sound waves |
Question: In 1976, the Viking I Lander was sent to Mars to analyze atmospheric gases and soil samples. The Viking I Lander was most likely a
Answer: space probe. |
Question: Which action forms a different chemical substance?
Answer: burning a piece of wood |
Question: Why do dogs have most of the characteristics of their parents?
Answer: They inherit them from their parents. |
Question: Which describes a specific characteristic necessary for survival in the desert?
Answer: conserving water |
Question: Frogs lay eggs that develop into tadpoles and then into adult frogs. This sequence of changes is an example of how living things
Answer: go through a life cycle |
Question: Quartz and feldspar are two common minerals. When they are found mixed together in nature they form
Answer: rocks. |
Question: Atoms of which of these elements are part of many organic molecules?
Answer: oxygen |
Question: Which object is the best conductor of electricity?
Answer: metal fork |
Question: An element with which property would be best to use in electrical wiring?
Answer: conductor |
Question: A large rock breaks into small pieces within 10 years. Which process is most likely responsible for breaking the large rock into small pieces within 10 years?
Answer: water repeatedly freezing and thawing in a crack |
Question: Paco throws a ball. What force pulls the ball down toward the ground?
Answer: gravity |
Question: Which is a unit of measure for length?
Answer: meters |
Question: Movement of Earth's crust along plate boundaries produces
Answer: earthquakes |
Question: The praying mantis is well camouflaged in its natural habitat. What is a benefit of this adaptation?
Answer: It reduces the risk of being eaten by a predator. |
Question: The Greek philosopher Aristotle described matter with the phrase "unable to be divided." The modern concept that grew from Aristotle's idea is the
Answer: atom. |
Question: Paleontologists often find and study the remains of ancient plants and animals. When the remains of ancient plants and animals are covered by layers of sediment over time, the remains
Answer: become a fossil |
Question: What are the basic structural units of living organisms?
Answer: cells |
Question: A student is visiting a local limestone quarry and finds fossils of seashells. The quarry is located hundreds of miles from the ocean. The fossils best indicate that
Answer: this area was once below sea level. |
Question: What happens to metal railroad tracks during the heat of a summer day?
Answer: increase in length |
Question: Jake is testing how light affects plant growth. He grows two plants in identical pots with the same amount of water and fertilizer. Jake grows one of the plants in the sun, and the other in the shade. Which part of Jake's process indicates that there is a control for this investigation?
Answer: He is growing one plant out of the sun. |
Question: Which stage of a frog's life cycle can be compared to a plant seed growing into a new plant?
Answer: when frog eggs hatch into tadpoles |
Question: Which of these elements is likely to be found in an organic compound?
Answer: hydrogen |
Question: What statement describes what happens to the carbon dioxide waste produced by a developing baby during pregnancy?
Answer: It is carried by the umbilical cord to the placenta and then to the mother's blood. |
Question: Which part of the atom has a negative charge?
Answer: electron |
Question: Which is a learned behavior?
Answer: A chimpanzee digs for termites with a stick. |
Question: Organisms that reproduce asexually generally have offspring that are
Answer: genetically identical. |
Question: Crows are found throughout many parts of the world. They are black birds with excellent hearing. In the wild they live for six to seven years. Some crows in Japan open hard-shelled nuts by dropping them in front of moving cars. Which of these is a learned behavior?
Answer: Dropping nuts in front of cars |
Question: Which object would best help a student determine if a block of an unknown material is magnetic?
Answer: paper clip |
Question: About how much of Earth's surface is covered by oceans?
Answer: about 70% |
Question: Sound will not travel in a
Answer: vacuum |
Question: What supplies most of the energy that plants need to make food?
Answer: sunlight |
Question: Which of the following is the main role of flowers found on most flowering plants?
Answer: to produce seeds |
Question: Which adaptation will warn predators not to eat an animal?
Answer: bright colors |
Question: The cones of a jack pine tree require great amounts of heat to release their seeds. When are jack pine tree seeds most likely released?
Answer: after a fire |
Question: When a thin slice from an onion is viewed through a microscope, lots of little box-like shapes are seen. These shapes are most likely
Answer: cells. |
Question: Which is an example of substances reacting chemically?
Answer: iron and oxygen forming rust |
Question: An object's hardness, taste, and texture are examples of
Answer: properties |
Question: Some objects conduct electricity. Which object is the best conductor of electricity?
Answer: a metal fork |
Question: Which of the following eras is known as the "Age of Mammals"?
Answer: Cenozoic |
Question: In Alaska, there are fewer hours of daylight in the winter than in the summer. Which statement best explains why this difference occurs?
Answer: The Northern Hemisphere is tilted away from the Sun in the winter. |
Question: Most of Earth's major earthquakes are caused by
Answer: faulting of rock in Earth's crust |
Question: A girl with long hair is going to be participating in an experiment that uses an alcohol burner for an energy source. What is the best thing for her to do to prepare for this experiment?
Answer: tie her hair back away from her face |
Question: Which factor would have the greatest influence on the southern migration of animals living in the Northern Hemisphere?
Answer: cold air temperatures |
Question: What carries oxygen throughout the body?
Answer: red blood cells |
Question: Which is the best example of an inherited behavior?
Answer: a cat clawing on a tree to sharpen its claws |
Question: What do all animals need in order to survive?
Answer: water, air, and food |
Question: Estella spilled tomato sauce on her shirt. When she washed her shirt, she noticed that the detergent she used contained enzymes. Enzymes are added to detergents to break down proteins from food and other substances that may stain clothing. Which would most likely inhibit the ability of the enzymes to remove the stain on her shirt?
Answer: the temperature of the water |
Question: Which of the following best describes an atom?
Answer: a core of protons and neutrons surrounded by electrons |
Question: At a weightlifting competition, two competitors lifted the same weight to the same height. The second competitor accomplished the lift 2 seconds faster than the first competitor. This demonstrated that the second competitor had more
Answer: power than the first. |
Question: The fur color of a bear varies with its environment. Polar bears found in the Arctic have white fur, while black bears found in Pennsylvania have dark fur. Which best describes the variation of fur color amongst the bear species?
Answer: structural adaptation |
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