Weathering and Erosion Answers

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Which of the following statements about erosion is true?

Erosion occurs as a result of drastic changes in temperature.

Erosion occurs when wind or water moves over sediment, soil, or rocks.

Physical and chemical are the two types of erosion.

Movement is not required for erosion to take place.

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Which of the following statements about artificial erosion is true?

Artificial erosion can occur 100 times faster than natural erosion.

Farming practices do not contribute to artificial erosion.

Artificial erosion causes a loss of fertile soil.

Artificial erosion is only caused by recreational activities.

When rocks are broken down by heat and pressure, chemical weathering has taken place.

Using off-road vehicles does not contribute to the process of erosion.

Which of the following is a result of natural erosion?

desert sands

lost seed germination

widened valleys

all of the above

Which of the following is characteristic of both weathering and erosion?

occurs naturally

caused by burrowing animals

occurs with movement

caused by the pull of gravity

What area would most likely experience the greatest amount of natural erosion?

grassland

forest

desert

rainforest

How is chemical weathering different from physical weathering?

Physical weathering involves the movement of substances while chemical weathering does not.

Chemical weathering occurs through human action while physical weathering occurs naturally.

Physical weathering is mechanical breakdown, while chemical weathering involves the chemical breakdown of substances.

Chemical weathering causes less drastic changes than physical weathering.

Which of the following is a way that humans speed up the process of erosion?

urban development

hiking

deforestation

all of the above

Weathering occurs as a result of direct contact with the atmosphere.

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