4,5,6 Geo phy

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What is mass movement?

Back

Mass movement refers to the large-scale movement of soil and rock down a slope due to gravity. Examples include landslides, mudflows, and rockfalls.

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What is a riverbed?

Back

The riverbed is the bottom surface of a stream or river, shaped by the processes of erosion and deposition.

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What are index fossils?

Back

Index fossils are fossils used by geologists to identify and date the age of rock layers in different regions, indicating that the rocks were formed during the same geological time period.

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How do sinkholes form?

Back

Sinkholes can form when rainwater, which contains carbon dioxide, dissolves underground rock, creating voids that can collapse.

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What is frost wedging?

Back

Frost wedging is a weathering process that involves the repeated freezing and thawing of water in cracks of rocks, leading to the gradual breaking apart of the rock.

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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, water, and ice.

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What is deposition?

Back

Deposition is the geological process where material is added to a landform or land mass, often occurring after erosion when the transporting medium loses energy.

Front

What is the difference between weathering and erosion?

Back

Weathering is the breakdown of rocks at the Earth's surface, while erosion is the movement of those broken materials from one location to another.

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What role does water play in geological processes?

Back

Water plays a crucial role in geological processes by facilitating erosion, transporting sediments, and contributing to weathering through chemical reactions.

Front

What is the significance of fossils in geology?

Back

Fossils are significant in geology as they provide evidence of past life and help in dating and correlating rock layers across different geographical areas.