Erosion and deposition

Front

What is erosion?

Back

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 and then transported to another location.

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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 when the energy of the transporting medium decreases.

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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, characterized by the deposition of sediment carried by the river as the flow velocity decreases.

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What is an alluvial fan?

Back

An alluvial fan is a fan-shaped deposit of sediment formed where a river flows out of a mountain range and onto a flatter plain, losing energy and depositing its load.

Front

What is chemical weathering?

Back

Chemical weathering is the process by which rocks undergo changes in their chemical composition, often resulting in the formation of new minerals and the breakdown of the original rock.

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What is a strike-slip fault?

Back

A strike-slip fault is a type of fault where two blocks of the Earth's crust slide past each other horizontally, often associated with transform plate boundaries.

Front

What is the primary cause of folding in the Earth's crust?

Back

The primary cause of folding in the Earth's crust is compression, which occurs when tectonic plates collide and push against each other.

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What is a drainage basin?

Back

A drainage basin is an area of land where all precipitation collects and drains off into a common outlet, such as a river or lake.

Front

What is a normal fault?

Back

A normal fault is a type of fault where the hanging wall moves down relative to the footwall, typically caused by extensional forces.

Front

What is a reverse fault?

Back

A reverse fault is a type of fault where the hanging wall moves up relative to the footwall, typically caused by compressional forces.