Structure and Composition of the Atmosphere Answers
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1
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Which word describes the amount of matter an object contains?
A
altitudeB
densityC
massD
pressure2
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Which describes one of oxygen's roles in Earth’s atmosphere?
A
allows fuels to burnB
forms clouds that produce rainC
is the gas that animals exhaleD
is used by plants to produce food3
Which characteristic describes the troposphere?
A
contains the ozone layerB
has the highest air pressureC
spans 12–50 km above EarthD
is a good place for planes to fly4
Which atmospheric layer prevents meteoroids from reaching Earth’s surface?
A
mesosphereB
stratosphereC
thermosphereD
troposphere5
As altitude increases, what happens to air pressure?
A
It fluctuates.B
It increases.C
It decreases.D
It stays the same.6
Which is one way that Earth’s atmosphere supports life?
A
It filters out oxygen.B
It keeps Earth warm.C
It increases UV radiation.D
It provides a solid shield.
8
Which gas in Earth’s atmosphere forms ozone?
A
oxygenB
nitrogenC
water vaporD
carbon dioxide9
Which gas is most abundant in Earth’s atmosphere?
A
oxygenB
nitrogenC
water vaporD
carbon dioxide10
Which phrase describes air density?
A
increases as altitude increasesB
equals mass divided by volumeC
pushes molecules in one directionD
exerts less pressure as it increases11
Which atmospheric layer gets warmer as altitude increases and contains the ozone layer?
A
mesosphereB
stratosphereC
thermosphereD
troposphere12
Which phrase describes density?
A
height of a point above sea levelB
force pushing on an area or a surfaceC
amount of mass in a certain volumeD
amount of matter an object contains13
Which correctly lists three characteristics that are used to describe air?
A
altitude, density, radiationB
density, radiation, massC
mass, pressure, densityD
pressure, altitude, radiationDid you find these answers helpful?
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