Erosion and Weathering

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What is erosion?

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Erosion is the process by which soil and rock are removed from the Earth's surface by natural processes such as wind or water flow.

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What is weathering?

Back

Weathering is the breaking down of rocks and minerals into smaller pieces by physical, chemical, or biological processes.

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What is acid rain?

Back

Acid rain is rainwater that has a lower pH than normal due to the presence of pollutants like sulfur dioxide and nitrogen oxides.

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What materials are most affected by acid rain?

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Materials like limestone, marble, and concrete are most susceptible to erosion by acid rain.

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What is chemical weathering?

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Chemical weathering involves the chemical breakdown of rocks, often changing their composition.

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What is physical weathering?

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

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What is biological weathering?

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Biological weathering occurs when living organisms, such as plants and animals, break down rocks.

Front

What is the pH of natural rainwater?

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The pH of natural rainwater is approximately 5.6.

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What causes the acidity in rainwater?

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The acidity in rainwater is primarily caused by carbon dioxide, which forms carbonic acid when dissolved in water.

Front

What is the primary agent of erosion?

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Water is the primary agent of erosion, but wind and ice can also contribute.