Physical Weathering Basics

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What is physical weathering?

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Physical weathering is the process of breaking down rocks into smaller pieces without changing their chemical composition.

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What is chemical weathering?

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Chemical weathering involves the breakdown of rocks through chemical reactions, often changing the minerals within the rocks.

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What is an example of physical weathering?

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An example of physical weathering is the freezing and thawing of water in rock cracks, which can cause the rocks to break apart.

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What is an example of chemical weathering?

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An example of chemical weathering is the rusting of iron in rocks when exposed to oxygen and moisture.

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What role do plants play in weathering?

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Plants can contribute to physical weathering through their roots, which can grow into cracks in rocks and break them apart.

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What is abrasion in the context of weathering?

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Abrasion is the process of rocks being worn down by friction and impact from wind, water, or other rocks.

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How does temperature change contribute to weathering?

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Temperature changes can cause rocks to expand and contract, leading to cracks and eventual breaking.

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What is the difference between physical and chemical weathering?

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Physical weathering breaks rocks into smaller pieces without changing their composition, while chemical weathering alters the minerals in the rocks.

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What is the impact of burrowing animals on rocks?

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Burrowing animals can physically break down rocks as they dig and create tunnels, contributing to physical weathering.

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What is the significance of stalactites and stalagmites?

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Stalactites and stalagmites form through chemical weathering as minerals dissolve in water and precipitate in caves.