Weathering

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What is weathering?

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Weathering is the process that breaks down rocks and minerals into smaller pieces or changes their chemical composition.

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What is chemical weathering?

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Chemical weathering involves the chemical alteration of minerals in rocks, often resulting in a change in color or composition.

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What is physical weathering?

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Physical weathering is the mechanical breakdown of rocks into smaller pieces without changing their chemical composition.

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What is oxidation in the context of weathering?

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Oxidation is a chemical weathering process where oxygen combines with minerals, often leading to rusting in rocks.

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What role do lichens play in weathering?

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Lichens produce acids that can chemically weather rocks, contributing to soil formation.

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What is acid precipitation?

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Acid precipitation refers to rain, snow, or fog that has a lower pH than normal, which can lead to chemical weathering.

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What is abrasion?

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Abrasion is a physical weathering process where rocks are worn down by friction and impact from other materials.

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What is exfoliation?

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Exfoliation is a physical weathering process where layers of rock peel away due to temperature changes.

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What is ice wedging?

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Ice wedging is a physical weathering process where water seeps into cracks, freezes, and expands, causing the rock to break apart.

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What is the difference between chemical and physical weathering?

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Chemical weathering changes the chemical composition of rocks, while physical weathering breaks rocks into smaller pieces without changing their composition.