AnswersEnvironmental Science APopulation Size

Changing Waterways Answers

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1
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How is an oxbow lake formed?

A
An oxbow lake is formed when a lake shrinks due to erosion.
B
An oxbow lake is formed when the wide bend of a river is cut off.
C
An oxbow lake is formed when high concentrations of salt are present in lakes.
D
An oxbow lake is formed when a dam or levee is built on a river.
2
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Recreational activities can cause an increase in erosion rates.

A
T
B
F
3

How is thermohaline circulation influenced by salinity and temperature?

A
It is driven by density gradients, which are affected by salinity and temperature, with cold water and water with higher salt concentrations being more dense.
B
It is driven by density gradients, which are affected by salinity and temperature, with warm water and water with higher salt concentrations being more dense.
C
It is driven by density gradients, which are affected by salinity and temperature, with warm water and water with lower salt concentrations being more dense.
D
It is driven by density gradients, which are affected by salinity and temperature, with cold water and water with lower salt concentrations being more dense.
4

Which of the following practices could help reduce erosion of water banks?

A
buffer strips
B
natural fertilizers and pesticides
C
decrease in fossil fuel emissions
D
all of the above
5

Reducing access to waterways will lead to an increase in human impact on waterways.

A
T
B
F
6

Over time, most lakes grow larger due to erosion.

A
T
B
F
7

How does the loss of vegetation on shore lines affect waterways?

A
decreased sedimentation
B
increased shorelines
C
increased erosion of water banks
D
none of the above
8

How does flooding affect rivers?

A
It causes river bends to be cut off.
B
It picks up deposits from floodplains.
C
It causes rivers to divert.
D
It causes river channels to change shape.
9

How can alternative practices lead to a reduced impact on waterways?

A
Alternative practices will completely eliminate changes to waterways.
B
Alternative practices can completely reverse the damage already done to waterways.
C
Alternative practices will allow industry greater access to waterways.
D
Alternative practices can lead to a decrease in pollution, erosion, and damage to waterways.
10

Which of the following methods would help decrease marine pollution?

A
government regulation of agriculture
B
government regulation of industry
C
reduction in chemical use
D
all of the above

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