Which food chain is in the correct order? grasshopper → grass → snake → frog → hawk grass → grasshopper → frog → snake → hawk grasshopper → frog → hawk → snake → grass grass → grasshopper → snake → frog → hawk

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How have desert plants adapted to their environment? by limiting the use of sunlight by storing water by distributing certain nutrients by releasing water

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Why can frogs and snakes live in the same garden? Both keep weeds out of the garden. Both keep weeds out of the garden. Both occupy different niches. Both help different plants to grow. Both compete for water.

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What prevents plant growth beneath the trees in thick forests? The roots of the trees make it difficult for plants to grow. The roots of the trees make it difficult for plants to grow. The trees limit the amount of sunlight that is able to reach the ground. The trees limit the amount of sunlight that is able to reach the ground. Little water reaches the ground under the trees. Little water reaches the ground under the trees. The temperature of the soil under the trees does not allow plants to grow. The temperature of the soil under the trees does not allow plants to grow.

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Which is the best example of habitat reduction caused by humans? Birds and animals flee a forest fire caused by lightning. Birds and animals flee a forest fire caused by lightning. Birds become sick from eating insects new to their area. Birds become sick from eating insects new to their area. Fish swimming to breeding grounds are blocked by dams. Fish swimming to breeding grounds are blocked by dams. A new species of fish migrates up a river, competing with native fish for food. A new species of fish migrates up a river, competing with native fish for food.

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How is a delta most likely formed? irrigation glacier movement precipitation and condensation deposition of sediment

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Which human activity will most likely increase the amount of soil erosion? growing crops mowing grass planting flowers clear-cutting wooded areas

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All of the landforms on Earth are constantly changing shape. What is most responsible for the changes in the landforms? earthquakes water erosion pollution oceans

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How does water help to break apart rock? by freezing and expanding by melting and contracting by condensing and expanding by evaporating and contracting

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Which statement best describes runoff? Water vapor cools off and changes into water droplets. Water vapor cools off and changes into water droplets. Water in the form of rain, snow, sleet, or hail falls from clouds. Water in the form of rain, snow, sleet, or hail falls from clouds. Precipitation that falls to Earth ultimately flows over land into lakes, streams, and rivers. Precipitation that falls to Earth ultimately flows over land into lakes, streams, and rivers. Water from the oceans and the surface of the earth changes into water vapor. Water from the oceans and the surface of the earth changes into water vapor.

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Sometimes the weather in North Carolina is affected by air masses moving from the Gulf of Mexico. Which best describes these air masses? cold and moist warm and moist cold and dry warm and dry

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What do meteorologists depend on to forecast an approaching storm? air pressure temperature humidity wind speed

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Most warm and cold air masses that enter North Carolina are moved by global winds. Which global winds are responsible for most of the local weather in North Carolina? northeast trade southeast trade polar easterlies prevailing westerlies

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Two people are each pulling on the opposite ends of a rope. If they are pulling on the rope with equal but opposite forces, what will happen to the rope? It will stay in place between the two people. It will stay in place between the two people. It will move toward the right. It will move toward the left. It will fall to the ground.

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Which statement best describes what must happen in order for a person to lift an object? The force of gravity must be greater than the mass of the object. The force of gravity must be greater than the mass of the object. The mass of the object must be greater than the force of gravity. The mass of the object must be greater than the force of gravity. The force of gravity must be greater than the upward pull or push on the object. The force of gravity must be greater than the upward pull or push on the object. The upward pull or push on the object must be greater than the force of gravity. The upward pull or push on the object must be greater than the force of gravity.

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What increases as a rock falls to the ground? the density of the rock the pull of gravity on the rock the inertia of the rock the momentum of the rock

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Which resource do decomposers return to the environment? light nutrients oxygen water

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Which is the greatest threat to the survival of large predator species, like mountain lions and tigers? loss of other predator species global climate changes loss of large wilderness areas animal diseases

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Which statement best explains why there are fewer carnivores living in tundra environments than in other environments? The short growing season limits the number of herbivores that support carnivores. The short growing season limits the number of herbivores that support carnivores. There is not enough sunlight for primary producers to carry out photosynthesis. There is not enough sunlight for primary producers to carry out photosynthesis. The large number of predators limits the number of carnivores that live in the tundra. The large number of predators limits the number of carnivores that live in the tundra. There are more disease-causing insects present in the tundra environment. There are more disease-causing insects present in the tundra environment.

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A class wants to find the ideal temperature for plants to grow in a terrarium. If the students set up several terrariums, what should they do to get the best results? plant different kinds of plants in each terrarium plant different kinds of plants in each terrarium use a light bulb with a different brightness in each terrarium use a light bulb with a different brightness in each terrarium add different amounts of water to each terrarium add different amounts of water to each terrarium place different types of fertilizer in each terrarium place different types of fertilizer in each terrarium

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Which factor causes a mud slide? the amount of rain in an area the amount of carbon dioxide in an area the amount of carbon dioxide in an area the amount of pollution in an area the amount of pollution in an area the amount of wind in an area

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Which type of event is most likely to form canyons and valleys? earthquake erosion hurricane ice storm

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Which will most likely be the result of a flood? Rock and soil will be deposited on a floodplain. Rock and soil will be deposited on a floodplain. Sand dunes will form along the river. Sand dunes will form along the river. The land around the river will be less able to grow plants. The land around the river will be less able to grow plants. Nutrients will be picked up and flow back to the river’s source. Nutrients will be picked up and flow back to the river’s source.

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Which is most likely part of a weather station in a school? balance scales magnifying lens rain gauge telescope

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A student picks up a glass of ice water and her hand gets wet. What most likely caused her hand to get wet? The table was wet. The water in the glass evaporated. The water in the glass evaporated. Some of the ice in the water melted. Condensation formed on the outside of the glass. Condensation formed on the outside of the glass.

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During evaporation, which change best describes what happens to water? A gas changes to a liquid. A gas changes to a liquid. A gas changes to a solid. A liquid changes to a gas. A liquid changes to a solid.

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Where do climate conditions cause hurricanes to become larger and more powerful? Over warm water Over cold water Over mountains Over dry, flat land

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A student is riding a bike and applies the brakes. Which most helps the bike to stop? friction gravity heat momentum

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A car moves along a road that has markers every kilometer. Over time, it passes the markers in shorter periods of time. Which best describes the motion of the car? The car is keeping the same direction. The car is keeping the same direction. The car is maintaining the same speed. The car is maintaining the same speed. The car is increasing speed. The car is changing direction.

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An object is moving at a constant speed. If a balanced force is applied in the opposite direction the object is moving, what will most likely happen? The object will speed up. The object will change direction. The object will continue moving at a constant speed. The object will continue moving at a constant speed. The object will slow down and eventually stop moving. The object will slow down and eventually stop moving.

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Which best explains why a moving wagon on a sidewalk will slow down? The friction between the box and the floor decreases when it is pushed. The friction between the box and the floor decreases when it is pushed. The pull of gravity on the box decreases when it is pushed. The pull of gravity on the box decreases when it is pushed. Unbalanced forces cause the box to move. Unbalanced forces cause the box to move. Balanced forces cause the box to move. Balanced forces cause the box to move.

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A scientist is designing a speedboat to travel through the water with the least amount of resistance. What would the scientist most likely need to consider when designing the boat? the length of the boat the shape of the boat the power of the boat the weight of the boat

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Which best describes the role of a producer in an ecosystem? to use energy from the sun to make food to use energy from the sun to make food to decompose dead organisms to eat other living organisms to feed on dead organisms

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What would most likely be the reason for a deer to move to another location? No vegetation is left in its habitat. No vegetation is left in its habitat. No animals are left in its habitat. No predators are left in its habitat. No predators are left in its habitat. No decomposers are left in its habitat. No decomposers are left in its habitat.

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Which type of environment is mostly populated with oak, hickory, beech, and maple trees? taiga deciduous forest tundra tropical rain forest

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What is needed for an ecosystem to support the greatest variety of organisms over the longest period of time? Many different kinds of bacteria Many different kinds of animals Many different kinds of minerals Many different kinds of plants

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When hiking, what is the best reference material to use to determine elevation? a globe of the world a topographic map of the area a road map of the state an atlas of the country

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Which is an example of weathering? soil being carried downstream by fast-moving water soil being carried downstream by fast-moving water rocks being formed by volcanoes rocks being broken apart by freezing water rocks being broken apart by freezing water sand being moved by strong winds sand being moved by strong winds

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What has caused the formation of most of the valleys that exist on Earth? rivers and glaciers wind and rain lakes and rivers canyons and plateaus

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Which factor is most helpful in determining where a thunderstorm is coming from and where it may go? humidity wind speed wind direction amount of rainfall

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Which cloud type is made up of ice crystals? fog stratus cumulus cirrus

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Which best describes a correct order of the water cycle? precipitation, runoff, condensation, evaporation, precipitation precipitation, runoff, condensation, evaporation, precipitation precipitation, runoff, evaporation, condensation, precipitation precipitation, runoff, evaporation, condensation, precipitation precipitation, evaporation, condensation, runoff, precipitation precipitation, evaporation, condensation, runoff, precipitation precipitation, evaporation, runoff, condensation, precipitation precipitation, evaporation, runoff, condensation, precipitation

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What occurs when cool air moves from the beach toward the ocean during the night? a land breeze prevailing winds a sea breeze updrafts

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A car is traveling at a speed of 45 km/h to a town 90 km away. If time = distance ÷ speed, how long will the car take to get to the town? 0.5 hour 1 hour 1.5 hours 2 hours

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When workers spread sand over icy bridges and roads in the winter, how does this help people drive on the roads? The sand increases friction between the road and the tires of a car. The sand increases friction between the road and the tires of a car. The sand increases the inertia of a car. The sand increases the inertia of a car. The sand increases the speed of a car. The sand increases the speed of a car. The sand increases the momentum of a car. The sand increases the momentum of a car.

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An object moving along a surface suddenly increases speed. What can cause this to happen? It is moved by balanced forces. It is moved by balanced forces. It is moved by two opposite forces. It is moved by an unbalanced force. It is moved by an unbalanced force. It is moved by a force without direction. It is moved by a force without direction.

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Students designed a tool to dig and cut into the soil. Which type of simple machine did they create? wheel and axle inclined plane pulley wedge

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A small fish, called a cleaner fish, picks bits of food from a shark’s teeth. What can best be concluded about this behavior? It takes needed nutrition away from the shark. It takes needed nutrition away from the shark. It helps both the cleaner fish and the shark. It helps both the cleaner fish and the shark. It removes food from inside the shark’s body. It removes food from inside the shark’s body. It helps the shark blend in with its surroundings. It helps the shark blend in with its surroundings.

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