Soils INV 1 - Physical and Chemical Weathering

What is physical weathering?

• The breakdown of rocks through chemical reactions

• The breakdown of rocks through physical forces like wind and water

• The formation of new minerals from old ones

• The melting of rocks due to high temperatures

Which of the following is an example of physical weathering?

• Rusting of iron

• Freezing and thawing of water in cracks

• Dissolving of limestone in acid rain

• Formation of stalactites in caves

How does abrasion affect rocks?

• It causes rocks to dissolve in water

• It smooths and polishes rock surfaces

• It changes the chemical composition of rocks

• It causes rocks to melt

What role does calcite play in weathering?

• It strengthens rocks against weathering

• It reacts with acids to cause chemical weathering

• It prevents water from entering rock cracks

• It forms a protective layer on rocks

Which process is an example of chemical weathering?

• Wind erosion

• Oxidation of minerals

• Ice wedging

• Sandblasting

Explain how abrasion can change the landscape over time.

• Abrasion can cause rocks to dissolve, leading to the formation of caves.

• Abrasion can wear down mountains and create smooth surfaces on rocks.

• Abrasion can cause rocks to expand and contract, leading to cracks.

• Abrasion can cause chemical reactions that change rock composition.

Tags

NGSS.MS-ESS2-2

Describe a scenario where calcite contributes to chemical weathering.

• Calcite in rocks reacts with rainwater, forming caves.

• Calcite in rocks is eroded by wind, creating sand dunes.

• Calcite in rocks is broken down by freezing and thawing.

• Calcite in rocks is polished by river water.

Tags

NGSS.MS-ESS2-2

How does chemical weathering differ from physical weathering?

• Chemical weathering involves physical forces, while physical weathering involves chemical reactions.

• Chemical weathering changes the chemical composition of rocks, while physical weathering does not.

• Chemical weathering only occurs in cold climates, while physical weathering occurs in warm climates.

• Chemical weathering is faster than physical weathering.

Predict the long-term effects of abrasion on a rocky coastline.

• The coastline will become jagged and uneven.

• The coastline will become smoother and more uniform.

• The coastline will rise in elevation.

• The coastline will become covered in vegetation.

Tags

NGSS.MS-ESS2-2

Analyze how the presence of calcite in rocks can influence the rate of weathering in a humid environment.

• Calcite will slow down weathering by forming a protective layer.

• Calcite will speed up weathering by reacting with acidic rainwater.

• Calcite will have no effect on the rate of weathering.

• Calcite will cause physical weathering by expanding in the heat.

Tags

NGSS.MS-ESS2-2