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Earth's Atmosphere

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

In general, atmospheric pressure is greatest near Earth's surface and ____ as you move upward away from sea level.
a.
decreases
c.
stays the same
b.
increases
d.
doubles
 

 2. 

The ____ is the source of all energy in our atmosphere.
a.
Sun
c.
Moon
b.
water cycle
d.
Coriolis effect
 

 3. 

Weather happens in which layer of the atmosphere?
a.
troposphere
b.
stratosphere
c.
mesosphere
d.
exosphere
 

 4. 

There are ____ molecules of air at high elevations, so air pressure is less.
a.
fewer
c.
more
b.
the same number of
d.
no
 

 5. 

The ____ is the layer of the atmosphere nearest to Earth's surface.
a.
exosphere
c.
stratosphere
b.
troposphere
d.
ionosphere
 

 6. 

The ____ contains the highest concentration of ozone.
a.
troposphere
c.
stratosphere
b.
mesosphere
d.
exosphere
 

 7. 

We measure air pressure with a what?
a.
thermometer
c.
hygrometer
b.
baramometer
d.
psychrometer
 

 8. 

We measure air temperature with a what?
a.
thermometer
c.
hygrometer
b.
barometer
d.
psychrometer
 

 9. 

Air pressure is greatest ____ because there are more molecules of air pushing down from above.
a.
at the top of the mountain
c.
in the troposphere
b.
at sea level
d.
in the exosphere
 

 10. 

The atmosphere contains more of which gas?.
a.
water vapor
c.
oxygen
b.
nitrogen
d.
carbon dioxide
 



 
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