Understanding Weathering and Erosion

What is the primary difference between chemical weathering and mechanical weathering?

• Chemical weathering involves physical breakdown, while mechanical weathering involves chemical changes.

• Chemical weathering involves chemical changes, while mechanical weathering involves physical breakdown.

• Both involve only physical changes.

• Both involve only chemical changes.

Which of the following is an example of mechanical weathering?

• Rusting of iron

• Freezing and thawing of water in cracks

• Dissolution of limestone

• Oxidation of minerals

How does erosion affect landscapes?

• It builds up new landforms.

• It breaks down and removes soil and rock.

• It only affects coastal areas.

• It has no impact on landscapes.

Tags

NGSS.MS-ESS2-2

Which process is responsible for the formation of sand dunes?

• Erosion

• Deposition

• Chemical weathering

• Mechanical weathering

What is the main agent of chemical weathering?

• Wind

• Water

• Ice

• Gravity

The Grand Canyon is primarily a result of which geological process?

• Volcanic activity

• Erosion by the Colorado River

• Deposition of sediments

• Chemical weathering

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

Which of the following is NOT a factor in mechanical weathering?

• Temperature changes

• Water

• Acid rain

• Wind