Winds — Unit test Answers

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1
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Which describes where fog forms?

A
at the ground
B
in the upper atmosphere
C
where the air has very low humidity
D
where the atmosphere contains few particles
2
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From which type of clouds do hail pellets form?

A
cirrus
B
cumulonimbus
C
nimbostratus
D
stratus
3

Which statement describes what will most likely occur when warm air cools and the temperature drops to the dew point?

A
Air will contain more water vapor.
B
Dew will form on leaves.
C
Clouds will disappear.
D
Water vapor in the air will evaporate.
4

Which statement is accurate about snowflakes?

A
They condense as solid water on grass.
B
They fall from the clouds as round pellets.
C
They form around particles in the atmosphere.
D
They form when temperatures are above freezing.
6

Which condition is necessary for water droplets to condense and form clouds?

A
dry air
B
ice crystals in air
C
tiny particles in air
D
rising temperatures
7

Which correctly lists three forms of frozen water?

A
dew, frost, rain
B
frost, hail, sleet
C
hail, rain, sleet
D
rain, dew, frost
8

Which description refers to cirrus clouds?

A
are fluffy
B
are wispy
C
produce snow
D
form at low altitudes
9

Which statement accurately describes humidity?

A
Humidity is a measure of dew in the air.
B
Colder air promotes more evaporation.
C
Cold air holds more moisture than warm air.
D
Humidity refers to the amount of water vapor in the air.
10

Which is one factor that affects the type of cloud that will form?

A
altitude
B
wind direction
C
color of clouds
D
size of ice pellets

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