7.8B Slow Changes to Earth's Surface

__________ is an example of chemical weathering.

• Abrasion

• Erosion

• Ice wedging

• Oxidation

Answer explanation

How are mechanical and chemical weathering similar?

• Both break down rock.

• Both build up landforms.

• Both only occur when water is present.

• Both change the composition of the rock.

Answer explanation

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Jennifer has a jar full of stones. For one year, Jennifer shakes the jar several times each

day. The illustration below shows the changes that occurred after one year. What process

does this illustration show?

• Abrasion

• Chemical Weathering

• Erosion

• Oxidation

Answer explanation

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Jennifer has a jar full of stones. For one year, Jennifer shakes the jar several times each

day. The illustration below shows that changes that occurred after one year. Which force is

responsible for wearing down the rocks in the jar?

• Friction

• Gravity

• Hydroelectric

• Magnetism

Answer explanation

Which of the following pictures is NOT an example of deposition?

• Picture A

• Picture B

• Picture C

• Picture D

Answer explanation

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As Marcus walks through the forest after a rainstorm, he notices bubbles forming in the

cracks of some rocks. Which of the following is most likely happening to the rocks?

• Abrasion

• Chemical Weathering

• Deposition

• Mechanical Weathering

Answer explanation

__________ is the process in which wind causes particles to bounce across a surface in the

direction the wind is blowing.

• Deflation

• Deposition

• Erosion

• Saltation

Answer explanation

What is the difference between a delta and an alluvial fan?

• A delta is found on dry land; an alluvial fan is found at the base of a river or

  stream.

• A delta is found at the base of a river or stream; an alluvial fan is found on dry

  land.

• A delta is an example of weathering; an alluvial fan is an example of deposition.

• There is no difference between a delta and an alluvial fan.

Answer explanation

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The table below shows how fast water is flowing at different points along a stream. At which

point would you expect to find the most deposition?

• Point A

• Point B

• Point C

• Point D

Answer explanation

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What is one result of acid rain?

• It slows down weathering.

• It speeds up chemical weathering.

• It speeds up mechanical weathering.

• It speeds up erosion in rivers and streams.

Answer explanation

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