Natural Events and the Environment Answers

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Which of the following best explains why deforestation increases the risk of floods in an area?

A
Tree leaves catch and retain rain water.
B
Trees block the free flow of water.
C
Deforestation increases precipitation.
D
Tree roots improve soil water retention.
3

Which best describes the effects of hurricanes?

A
Hurricanes tend to deposit more sediment than they remove.
B
Hurricanes have storm surges that cause widespread flooding.
C
Hurricanes have wind gusts that are fast but generally weak.
D
Hurricanes do not alter landscapes significantly.
4

Which of the following human activities can increase the risks of flooding?

A
clearing land for farming
B
planting trees
C
soil management
D
widening rivers
5

Which of the following best explains how human activities can directly contribute to landslides?

A
Removing plants from hillsides eliminates the root structures that anchor soil.
B
Clearing trees from hills increases the frequency of rainstorms.
C
Human activities tend to reduce the risk of fires.
D
Landslides are not impacted by human activities.
7

Which of the following best explains how a hurricane can increase an area’s susceptibility to future storms?

A
Storm surges cause massive damage to buildings along coastlines.
B
Hurricanes often flood coastal communities.
C
Hurricane strength winds cause large amounts of property damage.
D
Erosion caused by hurricanes can leave coasts more exposed to storms.
11

The rain that occurs after a volcano erupts would most likely be

A
acidic
B
basic
C
neutral
12

Why are hurricanes considered more damaging than tornadoes when tornados have stronger winds?

A
Hurricanes only strike coastlines while tornados strike coasts and inland.
B
Hurricanes also cause flooding and occur over a broader area.
C
Tornadoes move more slowly than hurricanes.
D
Tornadoes only occur inland, away from coastlines.
13

Which of the following is not an impact of wildfires?

A
air pollution
B
erosion
C
water pollution
D
none of the above
14

A dense mix of dry, hot rock fragments and hot gas erupting from volcanic vents at high speed is

A
pyroclastic flow.
B
lahar.
C
fumarole.
D
tephra.
15

Which of the following is not an environmental impact of resource extraction?

A
loss of soil
B
increased resource supply
C
water contamination
D
loss of vegetation

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