Weathering, Erosion, Deposition Flashcard

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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. An example is ice wedging, where water freezes in rock cracks and expands, causing the rock to break apart.

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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 are dropped off or deposited in a new location after being transported by wind, water, or ice.

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How does water erosion shape landscapes?

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Water erosion shapes landscapes by wearing away rocks and soil, creating features like valleys, canyons, and riverbanks.

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What role does gravity play in erosion?

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Gravity causes materials to move downhill, contributing to erosion through processes like landslides and rockfalls.

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What is chemical weathering?

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Chemical weathering involves the chemical alteration of minerals in rocks, often due to reactions with water, acids, or gases, leading to the breakdown of the rock.

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How does wind contribute to weathering?

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Wind contributes to weathering by carrying sand and other particles that can wear away rock surfaces, a process known as abrasion.

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What is the difference between weathering and erosion?

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Weathering is the breaking down of rocks, while erosion is the movement of those broken materials from one place to another.

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What is an example of biological weathering?

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Biological weathering occurs when living organisms, such as plants or animals, break down rocks. For example, tree roots can grow into cracks in rocks and pry them apart.

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What is the significance of deposition in coastal areas?

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Deposition in coastal areas leads to the buildup of landforms like beaches and deltas, as sediments are dropped off by waves and currents.