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