Quiz 14 Study Guide Flashcards

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1
Q

Water is pulled down because of the force of _______________.

A

gravity

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2
Q

Humus is the soft, organic substance in the soil made from the decayed remains of ________________ ______________.

A

living things

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3
Q

Bedrock is part of the earth’s ______________.

A

crust

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4
Q

a rare and valuable mineral

A

gem

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5
Q

a substance found naturally in the earth that has a crystal-like structure

A

mineral

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6
Q

Soil ____________ is the loss of soil by water or wind.

A

erosion

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7
Q

Rivers and glaciers can deposit _______________, making the soil more fertile

A

sediment

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8
Q

Crystals are ____________ arranged in precise, repeating patterns.

A

always

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9
Q

Loam is a mixture of ____________, silt, and clay.

A

sand

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10
Q

Weathering is the breaking down of __________ by the forces of nature.

A

rock

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11
Q

Be able to identify each horizon layer.

A

see Science book, p. 339

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