Understanding Weathering Processes

What is the definition of weathering?

• The process of rocks and minerals forming new shapes.

• The process of rocks and minerals breaking down or dissolving.

• The process of rocks and minerals melting.

• The process of rocks and minerals growing larger.

Which of the following is NOT a cause of weathering?

• Water

• Ice

• Fire

• Acids

Identify a type of weathering that involves chemical reactions.

• Mechanical Weathering

• Biological Weathering

• Chemical Weathering

• Physical Weathering

Which type of weathering is primarily caused by physical processes like frost and ice?

• Chemical Weathering

• Mechanical Weathering

• Biological Weathering

• Thermal Weathering

What is an example of biological weathering?

• Carlsbad Caverns National Park

• Grand Canyon

• Tree roots splitting rocks

• Ice breaking rocks

Explain how temperature changes can contribute to weathering.

• Temperature changes cause rocks to melt and reform.

• Temperature changes cause rocks to expand and contract, leading to cracks.

• Temperature changes have no effect on rocks.

• Temperature changes cause rocks to dissolve in water.

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NGSS.MS-ESS2-2

How do plants contribute to weathering?

• By providing shade to rocks.

• By growing roots that can split rocks apart.

• By absorbing water from rocks.

• By covering rocks with leaves.

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NGSS.MS-ESS2-2

Describe a scenario where mechanical weathering might occur.

• A rock dissolving in acid rain.

• A rock being split by tree roots.

• A rock being broken into smaller pieces by freezing and thawing.

• A rock changing color due to chemical reactions.

Why is the Grand Canyon an example of mechanical weathering?

• It was formed by chemical reactions.

• It was formed by the physical movement of water and ice.

• It was formed by tree roots splitting rocks.

• It was formed by animals digging.

Compare and contrast chemical and mechanical weathering.

• Both involve chemical reactions.

• Chemical weathering involves chemical reactions, while mechanical weathering involves physical processes.

• Both involve physical processes.

• Chemical weathering involves physical processes, while mechanical weathering involves chemical reactions.