AnswersFL-2001340-Environmental Science Sem 2Global Change

Weathering and Erosion Answers

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1
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Which is an example of natural erosion?

A
ice forming in cracks of rocks
B
acid rain falling on sidewalks
C
waves washing over rocks on the beach
D
water washing away soil in an area with off-road vehicles
2
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Which of the following is not a possible cause of erosion?

A
burrowing animals
B
gravity
C
water
D
none of the above
3

How is chemical weathering different from physical weathering?

A
Physical weathering involves the movement of substances while chemical weathering does not.
B
Chemical weathering occurs through human action while physical weathering occurs naturally.
C
Physical weathering is mechanical breakdown, while chemical weathering involves the chemical breakdown of substances.
D
Chemical weathering causes less drastic changes than physical weathering.
4

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

A
T
B
F
5

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

A
T
B
F
6

Which of the following statements about erosion is true?

A
Erosion occurs as a result of drastic changes in temperature.
B
Erosion occurs when wind or water moves over sediment, soil, or rocks.
C
Physical and chemical are the two types of erosion.
D
Movement is not required for erosion to take place.
7

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

A
T
B
F
8

Which of the following is an example of chemical weathering?

A
waves washing over rocks on the beach
B
acid rain falling on sidewalks
C
ice forming in the cracks of rocks
D
wind blowing against rocks
9

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

A
occurs naturally
B
caused by burrowing animals
C
occurs with movement
D
caused by the pull of gravity
10

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

A
grassland
B
forest
C
desert
D
rainforest
11

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

A
grassland
B
forest
C
coastline
D
rainforest
12

Why is natural erosion a beneficial process?

A
It helps create fertile soil.
B
It leads to reduced vegetation.
C
It happens rapidly.
D
It prevents damage from natural disasters.
13

Why is artificial erosion a concern if erosion can occur naturally?

A
Artificial erosion changes environments while natural erosion does not.
B
Artificial erosion occurs at a faster rate than natural erosion.
C
Artificial erosion affects soil while natural erosion does not.
D
Artificial erosion is of no concern.
14

Which of the following statements about artificial erosion is true?

A
Artificial erosion can occur 100 times faster than natural erosion.
B
Farming practices do not contribute to artificial erosion.
C
Artificial erosion causes a loss of fertile soil.
D
Artificial erosion is only caused by recreational activities.

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