Understanding Physical Weathering Processes

What is physical weathering?

• The process of rocks breaking down due to chemical reactions.

• The process of rocks breaking down into smaller pieces without changing their chemical composition.

• The process of rocks melting due to high temperatures.

• The process of rocks dissolving in water.

Which of the following is an example of physical weathering?

• Rust forming on iron.

• Limestone dissolving in acid rain.

• Ice wedging causing cracks in rocks.

• Plants releasing acids that break down rocks.

What role does abrasion play in physical weathering?

• It dissolves rocks in water.

• It chemically alters the minerals in rocks.

• It grinds and wears away rock surfaces through friction.

• It melts rocks due to high temperatures.

Which of the following is NOT a cause of physical weathering?

• Temperature changes.

• Water freezing and thawing.

• Acid rain.

• Wind carrying sand particles.

How does temperature change contribute to physical weathering?

• By causing rocks to dissolve.

• By causing rocks to expand and contract, leading to cracks.

• By chemically altering the minerals in rocks.

• By melting rocks into lava.

What is the result of physical weathering on rocks?

• Rocks become chemically altered.

• Rocks become larger and more solid.

• Rocks break down into smaller pieces called sediments.

• Rocks dissolve completely in water.

Which of the following processes is involved in physical weathering?

• Oxidation.

• Hydrolysis.

• Frost wedging.

• Carbonation.

What is the main difference between physical and chemical weathering?

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

• Physical weathering involves the breakdown of rocks without changing their chemical composition, while chemical weathering involves chemical changes.

• Physical weathering only occurs in cold climates, while chemical weathering occurs in warm climates.

• Physical weathering is caused by living organisms, while chemical weathering is not.

Which natural force is most likely to cause abrasion in rocks?

• Earthquakes.

• Wind carrying sand particles.

• Volcanic eruptions.

• Lightning strikes.

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What happens to the sediments produced by physical weathering?

• They dissolve in water and disappear.

• They are transported and deposited in new locations.

• They chemically react to form new minerals.

• They melt and form magma.

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