Weathering & Erosion REVIEW

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What is weathering?

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The process of breaking down rocks and minerals into smaller pieces through physical, chemical, or biological means.

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What is erosion?

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The process by which soil and rock are removed from one location and transported to another, often by wind, water, or ice.

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What is mechanical weathering?

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The physical breakdown of rocks into smaller pieces without changing their chemical composition.

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What is chemical weathering?

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The process that breaks down rocks through chemical reactions, altering the minerals within.

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What is soil horizon?

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A layer of soil that has distinct physical and chemical properties, typically categorized into horizons A, B, C, and R.

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What is Horizon A?

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Also known as topsoil, it is the uppermost layer of soil rich in organic material and nutrients.

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What is Horizon B?

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Also known as subsoil, it is the layer beneath topsoil that contains minerals leached from above.

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What is Horizon C?

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The layer of soil that consists of partially disintegrated rock and is the source of soil minerals.

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What is Horizon R?

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Also known as bedrock, it is the solid rock layer beneath the soil horizons.

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What is acid precipitation?

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Rain, snow, or fog that has a lower pH than normal, often due to pollutants, which can lead to weathering of buildings and natural features.