Ch 8, Lessons 1-3, 6th Grade Question Preview (ID: 61087)


Atmosphere. TEACHERS: click here for quick copy question ID numbers.

21% of the atmosphere is
a) oxygen
b) nitrogen
c) carbon dioxide
d) trace gases

___ form when water vapor condenses out of the air to form tiny droplets of water or crystals of ice.
a) clouds
b) raindrops
c) dew
d) smoke

The term used to describe the condition of Earth's atmosphere at a given place or time is
a) weather
b) climate
c) atmosphere
d) clouds

When air pressure increases, the walls of an aneroid barometer's chamber are
a) pushed in
b) bulging out
c) staying the same
d)

The amount of mass in a given volume of air is its
a) density
b) weight
c) height
d) volume

Aside from inches of mercury, the other unit of measurement for air pressure is
a) millibars
b) kilobars
c) millimercury
d) millipressure

The top of the stratosphere is ___ than the bottom.
a) warmer
b) cooler
c) more dense
d) bluer

The mesosphere protects Earth's surface by
a) burning up meteoroids
b) having the ozone layer
c) keeping Earth warm
d) producing oxygen

The highest layer of the atmosphere is the
a) thermosphere
b) troposphere
c) stratosphere
d) mesosphere

What are the two layers in the thermosphere?
a) exosphere and ionosphere
b) exosphere and ozone
c) ionosphere and ozone
d) ozone and mesosphere

This gas makes up less than 1% of the atmosphere but is essential to life
a) equator
b) Poles
c) tropic of cancer
d) tropic of capricorn

The troposphere is thickest over the
a) carbon dioxide
b) oxygen
c) nitrogen
d) water vapor

The amount of ___ varies greatly from place to place and from time to time.
a) water vapor
b) carbon dioxide
c) argon
d) oxygen

Pure air contains only gases and exists only in laboratories
a) false
b) true
c)
d)

The result of the weight of a column of air pushing on an area is
a) air pressure
b) density
c) humidity
d) evaporation

___ is the average level of the oceans
a) sea level
b) altitude
c) density
d) air pressure

When altitude increases, air pressure
a) decreases
b) increases
c) stays the same
d)

As you get to the top of the troposphere, temperature
a) decreases
b) increases
c) stays the same
d)

Water forms thin, feathery clouds of ice at the top of the
a) troposphere
b) stratosphere
c) exosphere
d) ionosphere

Which layer is just above the stratosphere?
a) mesosphere
b) troposphere
c) thermosphere
d) exosphere

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