Weathering

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Burrowing animals cannot contribute to the weathering of rocks.

• Correct

• Incorrect

Exfoliation occurs when water continually seeps into cracks, freezes, and expands eventually breaking the rock apart.

• Correct

• Incorrect

Earthworms are physical weathering agents.

• Correct

• Incorrect

Which is not included in the group?

• abrasion

• acidification

• carbonation

• hydration

What happens to pieces of rock as they are transported by a river?

• smaller and more jagged

• much larger and rounder

• gets larger and more jagged

• they get smaller and rounder

Which of the following is an example of biological weathering?

• Freeze-thaw

• Wind blowing sand onto a rock

• Abrasion due to the movement of glaciers

• Plant that grows on the cracks of the rocks

What are the two things that affect the rate of weathering?

• rain and ice

• type of rock and climate

• time and date

• size of rock and time of the year

Weak organic acids are produced by the action of the growing root of lichens. These acids react with some minerals in rocks resulting in the decomposition of rocks. How will you classify this process?

• Physical weathering

• Chemical weathering

• Biological weathering through physical means

• Biological weathering through chemical compounds

Strong winds blow small particles of the rocks

• Physical weathering

• Chemical weathering

• Biological weathering