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24 Cards in this Set
- Front
- Back
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weathering
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breakdown of rock into smaller pieces
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bedrock
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layer beneath weathered rock
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cover crop
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crop planted to keep the soil in place between harvests
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abrasion
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rocks scraping against one another
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soil
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mixture of small mineral fragments and organic material
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parent rock
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source of the soil
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oxidation
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when oxygen combines with iron to form rust
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mechanical
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type of weathering that occurs by physical means
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chemical
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rocks broken down by chemical means
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Horizon A
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topsoil
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Horizon B
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subsoil
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Horizon C
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weathered rock
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horizon
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each layer of the soil
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humus
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decayed plant and animal remains in the soil
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soil conservation
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ways to save the soil
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terracing
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step like layers built into the soil
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roots
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this in plants prevents soil loss
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erosion
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moving of soil from one place to another by wind, water, ice, gravity
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contour plowing
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plowing across the slope of the land to prevent soil erosion
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ice wedging
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rocks crack due to constant freezing and thawing.
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rust
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produced by oxidation
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acid precipitation
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causes statues to breakdown chemically
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lichen
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plant that breaks down rocks by acids
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differential weathering
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softer rocks wear away quicker than harder rocks
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