Science Unit 4 Study Guide

The _______ region receives the most rainfall in a year in the United States.

• Pacific Northwest

• Southwest

• Midwest

• Northeast

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______ can form when water weathers and erodes layers of rock.

• Canyons

• Mountains

• Valleys

• Plains

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If I put rocks into a jar of water and shook it, and then saw little pieces of sand in the water with the rocks, I would conclude that water can weather _______.

• rocks

• wood

• metal

• plastic

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Scientists can measure small _______ and _______ in the air near a volcano to see when it might erupt.

• earthquakes, gasses

• tremors, dust

• vibrations, smoke

• movements, ash

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A student puts a ball of modeling clay into the freezer overnight. He takes it out the next day and observes cracks in the clay. This is an example of weathering by _______.

• ice

• wind

• water

• sunlight

_______ ranges are found mainly on the edges of continents.

• Mountain

• River

• Desert

• Forest

Planting crops in rows that block water from running straight downhill helps stop erosion. It is important to test models of new designs to identify how a design might fall so that the design can be _______.

• improved

• ignored

• destroyed

• complicated

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If you were hiking through a U-shaped valley and saw boulders that were scraped smooth, what would you infer? The valley was carved by a _______.

• glacier

• river

• wind

• earthquake

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The youngest layer of sedimentary rock is usually on the _______ layer.

• top

• bottom

• middle

• side

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If a layer of earth had fossil remains of fish, you could infer that the land was once covered with _______.

• water

• sand

• ice

• forest

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