
Unit B: Atmosphere Review
Authored by Anna Czekaj
Science
7th Grade
Used 153+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the best definition for the atmosphere?
The layer of water covering Earth’s surface.
A thin layer of gases that form a protective covering
around the planet.
The layer of gases in which weather occurs.
The layer of continental and oceanic crusts.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the two most abundant gases in Earth's
atmosphere?
Carbon Dioxide and Oxygen
Carbon Dioxide and Nitrogen
Nitrogen and Oxygen
Nitrogen and Water Vapor
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which layer touches outer space?
Stratosphere
Mesosphere
Exosphere
Troposphere
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which molecule within the atmosphere is responsible for
blocking UV rays from the sun?
ozone
methane
carbon dioxide
nitrogen
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to air pressure as altitude increases?
(Think about the top of a mountain)
Increases - the higher you go, the more pressure you
feel
Decreases – the higher you go, the less pressure you
feel
Stays the same
The change is unknown
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What gas is necessary for humans to breathe? What
percentage of Earth's atmosphere is it?
nitrogen, 21%
nitrogen, 78%
oxygen, 78%
oxygen, 21%
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does the air density decrease with increasing
altitude within Earth's atmosphere?
Air density decreases with increasing altitude because
more atoms escape into outer space.
Air density decreases with increasing altitude because
temperature decreases with increasing altitude.
Air density decreases with increasing altitude because
at higher altitudes there are fewer air molecules and
these molecules are further apart.
Air density decreases with increasing altitude because
energy from the sun pushes the air particles closer to
Earth.
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