Weathering, erosion, deposition.

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What is weathering?

Back

Weathering is the process of breaking down rocks and minerals into smaller pieces by natural forces such as wind, water, and temperature changes.

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What is erosion?

Back

Erosion is 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 deposition?

Back

Deposition is the process where sediments, soil, and rocks are added to a landform or land mass, often occurring when the transporting medium loses energy.

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What role does wind play in shaping landscapes?

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Wind can erode loose, sandy soil and transport sediments, leading to the formation of features like sand dunes.

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How do rivers contribute to erosion?

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Rivers can erode the land by carrying away soil and rock as they flow, especially during heavy rainfall or flooding.

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What is a delta?

Back

A delta is a landform that forms at the mouth of a river where it meets a body of water, created by the deposition of sediments carried by the river.

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What is the difference between mechanical and chemical weathering?

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

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What is an example of mechanical weathering?

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An example of mechanical weathering is freeze-thaw action, where water seeps into cracks in rocks, freezes, expands, and eventually breaks the rock apart.

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What is an example of chemical weathering?

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An example of chemical weathering is the reaction of acid rain with limestone, which dissolves the rock.

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How does gravity contribute to erosion?

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Gravity causes rocks and soil to move downhill, leading to erosion through processes like landslides and rockfalls.