5.7B - Changes to Earth's Surface (Landforms)

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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 sediment carried by the river as the flow velocity decreases.

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How are sand dunes formed?

Back

Sand dunes are formed by the accumulation of sand grains that are moved by wind. The wind blows sand into a pile, creating a dune.

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What is weathering?

Back

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

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What is glacial movement?

Back

Glacial movement refers to the flow of glaciers as they move over land, shaping the landscape by eroding and depositing materials.

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What is a canyon?

Back

A canyon is a deep, narrow valley with steep sides, often formed by the erosion of rock by a river over a long period of time.

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What is a cave?

Back

A cave is a natural underground space large enough for a human to enter, often formed by the dissolution of limestone by water.

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What is a landform?

Back

A landform is a natural feature of the Earth's surface, such as mountains, valleys, plateaus, and hills.

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What is deposition?

Back

Deposition is the geological process in which sediments, soil, and rocks are added to a landform or land mass, often occurring at the mouth of rivers.

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What is erosion?

Back

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

Front

What causes landslides?

Back

Landslides are caused by the movement of rock, earth, or debris down a slope, often triggered by factors like heavy rainfall, earthquakes, or volcanic activity.