Weathering, Erosion & Deposition

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What is physical weathering?

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Physical weathering is the process where rocks are broken down into smaller pieces without changing their chemical composition, often due to temperature changes, freeze-thaw cycles, or abrasion.

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What is chemical weathering?

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Chemical weathering involves the chemical alteration of minerals in rocks, leading to their breakdown. An example is the reaction of iron with oxygen to form rust.

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What is erosion?

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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?

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

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How do plants contribute to weathering?

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Plants contribute to weathering through their roots, which can grow into cracks in rocks and expand, causing the rocks to break apart.

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What role do waves play in erosion?

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Waves are a significant force of erosion on beaches, constantly wearing away rocks and sediments through their powerful action.

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What is the difference between weathering and erosion?

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Weathering is the breakdown of rocks in place, while erosion involves the movement of those broken materials from one location to another.

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What is sedimentation?

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Sedimentation is the process by which particles settle out of a fluid (like water or air) and accumulate, forming layers of sediment.

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What factors influence the rate of weathering?

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Factors include climate (temperature and moisture), rock type, surface area, and biological activity.

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What is freeze-thaw weathering?

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Freeze-thaw weathering occurs when water enters cracks in rocks, freezes, expands, and eventually causes the rock to break apart.