Week 5 Test Answers

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1
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Natural erosion can be caused by _______.

A
farming
B
wind
C
deforestation
D
all of the above
2
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Which of the following statements about weathering is true?

A
Physical and chemical are the two types of weathering.
B
Weathering occurs when rocks are subjected to the movement of wind or water.
C
Humans are the only cause of weathering.
D
Movement is required for weathering to take place.
3

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.
4

Chemical and physical weathering both involve direct contact of the atmosphere with rocks, soils, and minerals.

A
T
B
F
5

What type of characteristics would you expect an area that is likely to experience a high amount of erosion to have?

Answer not available
6

Which type of deposition creates sandbars?

A
glacial
B
river
C
wave
D
wind
7

Explain how artificial erosion is a problem even though erosion occurs naturally.

Answer not available
8

Explain how chemical weathering differs from physical weathering.

Answer not available
9

How do oxbow lakes form?

A
Rivers are dammed, and the water builds up, creating a lake.
B
Runoff pools in areas of low elevation, creating a temporary lake.
C
Rivers wear away banks until the bank is broken and the river flows straight.
D
Glaciers leave deep channels in the ground, which fill with water and become a lake.
10

Chemical weathering is the breakdown of rocks, soils, and minerals through _______.

A
atmospheric or biologically produced chemicals
B
atmospheric conditions
C
the movement of wind and water
D
mechanical means
11

Which process involves wind moving loose sediment?

A
abrasion
B
deflation
C
impact
D
plucking
12

Which action would best help prevent groundwater erosion?

A
using breakwaters
B
packing down soil
C
building drains with outlets
D
increasing the slopes of riverbanks
13

The cracking of rock due to heat is an example of _______.

A
erosion
B
physical weathering
C
chemical weathering
D
none of the above
14

How are weathering and erosion similar? How are they different?

Answer not available
15

Weathering is _______.

A
caused by the movement of materials over rocks
B
not a natural process
C
a process whereby rocks are broken down by direct contact with the atmosphere
D
all of the above

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