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Ch 8, Lessons 1-3, 6th Grade
Test Description: Atmosphere
Instructions: Answer all questions to get your test result.
1) 21% of the atmosphere is
A
oxygen
B
trace gases
C
nitrogen
D
carbon dioxide
2) ___ form when water vapor condenses out of the air to form tiny droplets of water or crystals of ice.
A
raindrops
B
smoke
C
dew
D
clouds
3) The term used to describe the condition of Earth's atmosphere at a given place or time is
A
clouds
B
climate
C
weather
D
atmosphere
4) When air pressure increases, the walls of an aneroid barometer's chamber are
A
bulging out
B
staying the same
C
pushed in
5) The amount of mass in a given volume of air is its
A
density
B
volume
C
weight
D
height
6) Aside from inches of mercury, the other unit of measurement for air pressure is
A
millimercury
B
millibars
C
kilobars
D
millipressure
7) The top of the stratosphere is ___ than the bottom.
A
cooler
B
warmer
C
bluer
D
more dense
8) The mesosphere protects Earth's surface by
A
keeping Earth warm
B
having the ozone layer
C
producing oxygen
D
burning up meteoroids
9) The highest layer of the atmosphere is the
A
troposphere
B
mesosphere
C
thermosphere
D
stratosphere
10) What are the two layers in the thermosphere?
A
exosphere and ionosphere
B
ionosphere and ozone
C
ozone and mesosphere
D
exosphere and ozone
11) This gas makes up less than 1% of the atmosphere but is essential to life
A
tropic of capricorn
B
tropic of cancer
C
Poles
D
equator
12) The troposphere is thickest over the
A
water vapor
B
nitrogen
C
oxygen
D
carbon dioxide
13) The amount of ___ varies greatly from place to place and from time to time.
A
oxygen
B
argon
C
carbon dioxide
D
water vapor
14) Pure air contains only gases and exists only in laboratories
A
false
B
true
15) The result of the weight of a column of air pushing on an area is
A
density
B
evaporation
C
air pressure
D
humidity
16) ___ is the average level of the oceans
A
density
B
air pressure
C
sea level
D
altitude
17) When altitude increases, air pressure
A
stays the same
B
increases
C
decreases
18) As you get to the top of the troposphere, temperature
A
increases
B
stays the same
C
decreases
19) Water forms thin, feathery clouds of ice at the top of the
A
troposphere
B
ionosphere
C
exosphere
D
stratosphere
20) Which layer is just above the stratosphere?
A
mesosphere
B
exosphere
C
troposphere
D
thermosphere
*select an answer for all questions
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