AnswersSTPSB_Environmental Science 2627Lab: Modeling Water Erosion

Week 5 Test Answers

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1
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Natural erosion can be caused by _______.a.farmingb.windc.deforestationd.all of the above

A
A
B
B
C
C
D
D
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.

A
A
B
B
C
C
D
D
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.

A
A
B
B
C
C
D
D
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 chemicalsb.atmospheric conditionsc.the movement of wind and waterd.mechanical means

A
A
B
B
C
C
D
D
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.erosionb.physical weatheringc.chemical weatheringd.none of the above

A
A
B
B
C
C
D
D
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 rocksb.not a natural processc.a process whereby rocks are broken down by direct contact with the atmosphered.all of the above

A
A
B
B
C
C
D
D

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