Science Practice

What prevents plant growth beneath the trees in thick forests?

• The trees limit the amount of sunlight that is able to reach the ground.

• The roots of the trees make it difficult for plants to grow.

• Little water reaches the ground under the trees.

• 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 become sick from eating insects new to their area.

• Fish swimming to breeding grounds are blocked by dams.

• A new species of fish migrates up a river, competing with native fish for food.

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NGSS.MS-ESS3-4

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

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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NGSS.MS-ESS2-2

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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

Much of the time the weather in Florida 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

• fun and festive

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NGSS.MS-ESS2-5

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What do meterologist depend on to forcast an approaching storm?

• air pressure

• temperature

• humidity

• wind speed

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NGSS.MS-ESS2-5

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This diagram shows a light bulb. The bottom of the light bulb is shaped so that the bulb fits securely into a light socket.

Which type of simple machine is the bottom of the bulb?

• lever

• pulley

• screw

• wedge

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 move toward the right.

• It will move toward the left.

• It will fall to the ground.

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