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Science Quarter 3 Review
Test Description: Unit 3
Instructions: Answer all questions to get your test result.
1) What are the two most abundant gases in the atmosphere?
A
oxygen and nitrous oxide
B
oxygen and carbon dioxide
C
nitrogen and oxygen
D
carbon dioxide and air
2) The ozone layer is in the stratosphere. What does it absorb?
A
pollution
B
carbon dioxide
C
visible light
D
ultrviolet radiation
3) Which layer of the atmosphere contains weather?
A
ionosphere
B
troposphere
C
mesosphere
D
thermosphere
4) What is the atmosphere?
A
the ozone layer
B
layer of clouds
C
layer of gases
D
layer containing weather
5) Why is the atmosphere important?
A
it provides energy
B
it provide needed gases
C
it is transparent
D
it is dense
6) According to scientists, what causes global emissions of carbon dioxide to rise?
A
threat of severe weather
B
producing hydroelectricity
C
glaciers melting
D
burning (combustion) of fossil fuels
7) Why is it important for scientists to study climate change?
A
so humans can move to nicer climates
B
so people can dress appropriately
C
to predict sever weather
D
so humans can change activities to regulate climate
8) How do trees and other plants affect carbon dioxide level in the atmosphere?
A
trees and other plants need water to grow
B
trees and other plants take in oxygen and produce carbon dioxide
C
trees and other plants absorb carbon dioxide and produce oxygen
D
trees and other plants need sunlight to grow
9) What happens when global levels of carbon dioxide rise?
A
severe weather
B
temperatures fall
C
global warming
D
oxygen levels drop
10) What is a natural cause of global warming?
A
volcanoes
B
burning (combustion) of fossil fuels
C
acid rain
D
glaciers melting
*select an answer for all questions
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