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Atmosphere
Test Description: Structure and composition of atmosphere
Instructions: Answer all questions to get your test result.
1) What process was responsible for producing gases and formed the early atmosphere?
A
outgassing
B
vegetation
C
meteor impact
D
photosynthesis
2) Early atmosphere did not have oxygen. What was the source/s of oxygen?
A
volcanoes
B
plants and bacteria
C
animals
D
humans
3) Carbon dioxide, nitrogen, methane, water vapor were already present in the Early Earth. This statement is
A
true
B
false
C
maybe
D
all of the above
4) What was the reason why plants and bacteria survive in the early Earth?
A
formation of severe weather
B
formation of an ozone layer
C
the formation of solar system
D
human life
5) In which layer of the atmosphere do you find rain, snow and clouds
A
troposphere
B
stratosphere
C
thermosphere
D
mesosphere
6) What is the most common gas in the atmosphere?
A
carbon dioxide
B
nitrogen
C
oxygen
D
water vapor
7) In which layer of the atmosphere is ozone found?
A
stratosphere
B
thermosphere
C
mesosphere
D
troposphere
8) What have CFC's done to Earth and its atmosphere?
A
They have caused more ultraviolet radiation to reach the Earth.
B
They have created a hole in the ozone layer.
C
all of the above
D
They have caused a number of skin cancer cases to rise.
9) How have man's activities chnaged the compostion of our atmosphere?
A
They have made the atmospheric temperature drop.
B
They have polluted it with excess ozone.
C
They have polluted it with carbon dioxide and chemicals.
D
They have made the atmospheric pressure drop.
10) Earth's atmosphere is divided into layers that are based upon their
A
relative humidity
B
gas content
C
temperature gradient
D
water content
*select an answer for all questions
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