The Forces of Weathering and Erosion

What is the main difference between weathering and erosion?

• Weathering involves the movement of rock, while erosion does not.

• Erosion involves the movement of rock or soil, while weathering is the breaking down of rock in place.

• Weathering and erosion are the same processes.

• Erosion happens only with water, while weathering happens with other elements like wind.

Which of the following is an example of physical weathering?

• Oxidation of minerals

• Dissolution of rock by acid rain

• The cracking of rock caused by freezing and thawing

• The decomposition of rock by lichens

What is the main agent of erosion?

• Plants

• Wind

• Water

• Animals

Which of the following is NOT a result of erosion?

• Sand dunes

• River valleys

• Mountain formation

• Delta formation

What term describes the grinding away of rock by other rock particles carried in water, ice, or wind?

• Abrasion

• Hydrolysis

• Oxidation

• Exfoliation

Which of the following is a biological weathering process?

• Salt crystal growth

• Root wedging

• Thermal expansion

• Wind abrasion

What is the process by which wind removes surface materials?

• Deflation

• Deposition

• Compression

• Compaction

Which of the following features is formed by glacial erosion?

• Sand dunes

• Volcanoes

• U-shaped valleys

• Alluvial fans

Soil erosion can be reduced by which of the following practices?

• Deforestation

• Overgrazing

• Crop rotation

• Construction activities

What is the term for the layer of rock fragments that covers soil and can be moved by erosion?

• Bedrock

• Regolith

• Humus

• Mantle