Weather
Practice Test
1.
What element of air determines its temperature?
a.
the direction of air molecules
b.
the composition of air molecules
c.
the average motion of air molecules
d.
the arrangement of air molecules
Hint
2.
What is the difference between a tornado and a hurricane?
a.
Tornadoes occur over sea and hurricanes occur over land.
b.
They are the same things.
c.
Tornadoes occur over land and hurricanes occur over sea.
d.
Tornadoes happen during winter and hurricanes happen in the summer.
Hint
3.
The term
stationary front
describes a front __________.
a.
that is present for a brief amount of time
b.
that changes
c.
that continues forward
d.
that stops advancing
Hint
4.
What type of clouds form thunderstorms?
a.
nimbus
b.
nimbostratus
c.
cumulonimbus
d.
cirrostratus
Hint
5.
How does lightening occur during a storm?
a.
The relative humidity drops.
b.
Converging fronts collide.
c.
The atmospheric pressure suddenly rises.
d.
Different parts of a cloud become oppositely charged, and current flows between them.
Hint
6.
Weather refers to the state of the atmosphere__________.
a.
at a specific temperature
b.
at a specific time and place
c.
over a short period of time
d.
over a long period of time
Hint
7.
When the temperature reaches its ____ , snow, rain,or hail is likely to form.
a.
saturation point
b.
dew point
c.
relative humidity
d.
evaporation point
Hint
8.
Cumulous clouds are associated with __________.
a.
fair weather and rainstorms
b.
approaching storms
c.
sunny weather
d.
fog
Hint
9.
The prefix
cirro
added to the suffix
cumulus, cirrocumulus,
refers to __________.
a.
low, puffy, white clouds
b.
high, puffy, white clouds
c.
high, curly clouds
d.
middle-level, flat, even clouds
Hint
10.
Stratus clouds form __________.
a.
fog
b.
layers of even sheets in the sky
c.
puffy white clouds
d.
fibrous, or curly, clouds
Hint
11.
In what ways does the Sun influence weather?
a.
The Sun heats air in the atmosphere.
b.
The Sun evaporates water in the atmosphere to create clouds.
c.
all answers are correct
d.
The Sun heats water on Earth.
Hint
12.
What creates a wind shear?
a.
thunder
b.
a difference in wind direction and speed
c.
similar wind speeds and directions
d.
increasing rainfall
Hint
13.
Does warm air or cool air hold more humidity?
a.
warm air because air molecules in warm air move fast
b.
warm air because air molecules in warm air move slowly
c.
cool air because air molecules in cool air move slowly
d.
cool air because air molecules in cool air move fast
Hint
14.
Of the four main types of precipitation, which refreezes after melting near the ground?
a.
sleet
b.
rain
c.
hail
d.
snow
Hint
15.
What causes wind?
a.
weather patterns
b.
low pressure
c.
Air moves from regions of high pressure to regions of low pressure.
d.
high pressure
Hint
16.
What is the cause of the strong winds associated with thunderstorms?
a.
weak updrafts of warm, moist air
b.
strong updrafts of warm, moist air and sinking, rain-cooled air
c.
strong updrafts of dry air
d.
rain-cooled air
Hint
17.
How do isobars help meteorologists predict weather?
a.
They help meteorologists predict dry weather.
b.
They help meteorologists tell how fast wind is blowing by noting how closely isobars are placed on a weather map.
c.
They help meteorologists see areas of equal temperature.
d.
They help meteorologists tell how fast wind is blowing by noting how far apart isobars are placed on a weather map.
Hint
18.
What does water vapor condense around to form clouds?
a.
space
b.
air molecules
c.
snow
d.
small particles like dust and salt
Hint
19.
An anemometer measures_____.
a.
humidity
b.
temperature
c.
wind speed
d.
atmospheric pressure
Hint
20.
What causes low-pressure winds to swirl in a counter-clockwise direction?
a.
precipitation
b.
Earth's rotation
c.
Earth's revolution around the Sun
d.
the natural tendency of winds to blow from low to high pressure
Hint
