Waves — Unit test Answers

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1
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Picking up sediment and moving it to another area is called

A
abrasion
B
desert varnish
C
deflation
D
sand blasting
3

Which of the following soil properties is not influenced by microorganism activity?

A
soil acidity
B
amount of organic matter
C
nutrient levels
D
none of the above
4

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
5

Which of the following properties of soil helps in absorbing contaminants from the soil?

A
cation-exchange capacity
B
soil reaction
C
soil structure
D
soil consistency
7

Soil erosion can be slowed by ____.

A
no-till farming
B
cutting trees from the middle of fields
C
plowing at least three times a year
D
farming on steeper slopes
8

Soil erosion can be reduced by

A
agriculture cultivation
B
crop management
C
forest harvesting
D
overgrazing
9

Which of the following is a result of natural erosion?

A
desert sands
B
lost seed germination
C
widened valleys
D
all of the above
12

Till, Moraine and kettle are examples of

A
glacial erosion
B
types of glaciers
C
glacial deposition
D
valley glaciers
13

Artificial erosion does not impact the environment any more than natural erosion does.

A
T
B
F
14

Weathering and erosion both contribute to the disintegration of rocks.

A
T
B
F
15

Microorganisms and humus have little impact on soil health.

A
T
B
F
16

Erosion occurs based on the movement of water, wind, or ice over a surface and typically moves on the downward-creep slope because of

Answer not available
17

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.
18

Wind causes erosion though ablation and abrasion.

A
T
B
F
19

On steep slopes and mountains, ____ helps reduce erosion by creating level areas for crops.

A
a shelter belt
B
strip cropping
C
mulching
D
terracing
20

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.

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