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