AnswersHS Earth and Space Science Sem. 1Lab: Effects of Human Activity on Freshwater Resources

Lab: Effects of Human Activity on Freshwater Resources — Unit test Answers

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1
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How does mining impact the environment?

A
It has a positive impact on the environment by permanently altering the ecosystem.
B
It has a positive impact on the environment by releasing chemicals into the environment.
C
It has a negative impact on the environment by allowing toxic chemicals to harm wildlife.
D
It has a negative impact on the environment by providing new niches for wildlife to inhabit.
2
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Which correctly lists the three gases that are part of Earth’s cycles in both the atmosphere and biosphere?

A
radon, carbon monoxide, oxygen
B
carbon dioxide, nitrogen, oxygen
C
nitrogen, carbon dioxide, carbon monoxide
D
carbon dioxide, radon, oxygen
3

Where is most of Earth’s 3 percent of fresh water found?

A
oceans
B
ice
C
water vapor
D
lakes
4

Which could cause topsoil to be lost?

A
wind and water erosion
B
lack of use
C
compaction
D
desertification
5

Why is sustainable use of natural resources important?

A
to ensure that natural resources are available for future generations
B
to help make daily life simpler by providing what every person needs
C
to encourage scientists to make new and elaborate discoveries
D
to prevent the exchange of resources from one region to another
6

Natural resources are classified as renewable and nonrenewable. What is the difference between the two?

A
whether or not the resource exists in nature
B
whether or not the resource can be replaced
C
whether or not the resource dwindles in supply
D
whether or not the resource is useful to humans
7

The Great Pacific Garbage Patch is an area in the North Pacific Ocean that contains trash and causes harm to ocean life and those that consume that life. What lessons can be learned from this floating pile of trash?

A
There is no relationship between our daily activities and the environment.
B
There are more polluters in the Pacific Ocean than in the Atlantic Ocean.
C
There are areas of the ocean to avoid with boats.
D
There is a relationship among all living things on Earth.
8

Which resource is renewable?

A
coal
B
oil
C
steel
D
wind
9

Which describes one way that renewable resources differ from nonrenewable resources?

A
Renewable resources make cleaner energy.
B
It takes longer to replenish renewable resources.
C
Renewable resources are more easily located and harvested.
D
Pollution levels increase with the use of renewable resources.
10

Which is an example of how water is used inside and around the home?

A
fishing in a lake
B
washing clothes at the laundromat
C
brushing teeth before bed
D
washing a car in an automatic carwash
11

Which statement describes a disadvantage of using natural gas as an energy source?

A
It is expensive to use.
B
It is hard to stop using.
C
It is a renewable resource.
D
It is scarce in some parts of the world.
12

Which statement accurately describes one role of water on Earth?

A
Water in plants and animals transports nutrients into cells.
B
Water reflects sunlight that hits the oceans.
C
Water builds up rock and soil.
D
Water holds heat by trapping it within the equator.

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