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7 th Grade Science Environmental Changes Review

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A:B: PrimarySecondary #1 __________ weathering is the actual breaking down of rocks. C:D: PhysicalChemical

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C. Physical

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A:B: Secondary #2 __________ weathering causes changes in rocks from the reaction of different chemicals on the surface of rocks. C:D: PhysicalChemical Primary

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D. Chemical

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A:B: Chemical weatheringPhysical weathering C:D: successiondeposition #3 *Tree roots growing through rock. *A hurricane washing away beaches. *The Grand Canyon. These are examples of _________ __________

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B. Physical weathering

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A:B: Chemical weatheringPhysical weathering C:D: successiondeposition #4 *Lichens growing on rock. *Acid rain causing a statue to change shape. *Rusting Iron. These are examples of _________ __________

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A. Chemical weathering

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A:B: erosionweathering #5 The process by which wind or water carry soil and sediment from one place to another is called __________. C:D: successiondeposition

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A. Erosion

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A:B: To prevent erosionTo cause weathering C:D: To stop successionTo prevent deposition #6 Why is new grass planted on a yard that previously had no grass?

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A. To prevent erosion

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A:B: SiltSediment C:D: MulchDeposits #7 Another term for tiny rock pieces

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B. Sediment

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A:B: erosionweathering #8 The process by which wind or water carry soil and sediment from one place to another is called __________. C:D: successiondeposition

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A. Erosion

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A:B: humanswind C:D: pressurewater #9 The most significant force of erosion is _________.

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D. water

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A:B: WindPressure C:D: HailHumans #10 What are two other causes of erosion besides water?

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A. Wind & D. Humans

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A:B: primarysecondary C:D: Physicalchemical #11 The most common cause of ________ weathering is the constant freezing and thawing of water.

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C. Physical

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A:B: jelly ; chemicalliquid ; physical C:D: chemical ; physicalacid ; chemical #12 Lichens secrete an ______ that causes _________ weathering.

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D. acid ; Chemical

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A:B: weatheringdeposition C:D: topographysymbosis #13 The dropping of sediments after erosion is called __________

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B. deposition

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A:B: rock weathering sediment erosion - deposition rock weathering erosion sediment - deposition #14 Put the following in order: erosion, deposition, weathering, sediment, and rock. C:D: erosion deposition weathering rock - sediment sediment rock weathering deposition - erosion -

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A. rock weathering sediment erosion - deposition

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A:B: WatershedIsland C:D: NeitherBoth #15 Land that surrounds a water source

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A. Watershed

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A:B: Pollutes waterDamages the watershed C:D: NeitherBoth A and B #16 Why is poring oil down a drain unsafe for the environment?

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D. Both A and B

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A:B: It will pollute the watershed It will pollute the water in Lake Waco C:D: NeitherBoth A and B #17 How will the dairy farms along the northern Bosque River affect the drinking water in Waco?

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D. Both A and B

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