Matching
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Match each item with the correct statement below. a. | hail | f. | areas of high
pressure | b. | cloud | g. | sleet | c. | dew
point | h. | snow | d. | relative humidity | i. | areas of low pressure | e. | fog | | | | |
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1.
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a
type of precipitation that forms when the air temperature is below freezing and water vapor changes
directly to a solid
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2.
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a
form of precipitation that can break windows and destroy crops
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3.
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a
type of precipitation that forms when raindrops pass through a layer of freezing air near Earth's
surface
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4.
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the
temperature at which air is saturated and condensation forms
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5.
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forms
when millions of water droplets become suspended in air and collect around small dust
particles
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6.
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given
as a percentage indicating how much water vapor is in the air on a certain day
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7.
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areas
of less dense, warm air that can be forced upward
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8.
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areas
of descending air
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9.
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stratus cloud that forms when air condenses near the ground
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Short Answer
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10.
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Explain what is happening in Figure 16-2A.
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Figure 16-1
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11.
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What
is the current dew point temperature at the station shown in Figure 16-1?
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12.
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According to the station model shown in Figure 16-1, how much has the barometric
pressure changed in the last 3 hours?
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13.
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Given
the dew point and the air temperature shown in Figure 16-1, do you expect there to be precipitation?
Why?
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14.
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What
is the current temperature at the station shown in Figure 16-1?
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Figure 16-3
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15.
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What
is the lowest possible temperature for a cubic meter of air that holds 50 g of water vapor at
10°C?
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16.
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What
is the name for the amount of water vapor held in air?
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17.
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As
the temperature of air increases, can it hold more water vapor or less water vapor?
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18.
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What
would be the relative humidity of a cubic meter of air that holds 5 g of water vapor at
10°C?
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19.
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How
does atmospheric pressure affect the weather?
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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20.
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A
____ studies and forecasts the weather using data gathered from many sources. a. | geologist | c. | biologist | b. | meteorologist | d. | station model | | | | |
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21.
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Water
can form on grass in the early morning when the air is clear because ____. a. | the air near the
ground cools to its dew point | b. | the relative humidity decreases | c. | the air is NOT
saturated | d. | the air near the ground is warmer than the
ground | | |
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22.
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The
boundary between cold and warm air masses is called a ____. a. | storm | c. | front | b. | flood | d. | climate | | | | |
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23.
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High,
thin, white, feathery clouds containing ice crystals are usually associated with fair weather, but
they can also indicate approaching storms. These clouds are called ____ clouds. a. | cirrus | c. | stratus | b. | cumulus | d. | nimbus | | | | |
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24.
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Masses of puffy, white clouds, often with flat bases, that form when air currents rise
are called ____ clouds. a. | stratus | c. | nimbus | b. | cirrus | d. | cumulus | | | | |
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25.
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Most
hurricanes ____. a. | are
high-pressure systems | c. | travel west to
east | b. | travel east to
west | d. | gain energy when
they strike land | | | | |
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26.
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To
keep track of high-and low-pressure areas, weather maps are drawn with lines connecting points of
equal atmospheric pressure. These lines are called ____. a. | isotherms | c. | isobars | b. | fronts | d. | equibars | | | | |
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27.
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Fog
is a ____ cloud that forms near the ground. a. | cirrus | c. | cirrocumulus | b. | stratus | d. | cumulus | | | | |
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28.
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High
pressure means good weather because ____. a. | the air masses rise | b. | the air masses
sink, making it difficult for clouds to form | c. | clouds are blown
away by wind | d. | none of the above | | |
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29.
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A(n)
____ connects points of equal temperature. a. | isobar | c. | station model | b. | isotherm | d. | none of the
above | | | | |
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30.
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____
humidity is a measure of the amount of water vapor that air is holding compared to the amount needed
for saturation at a specific temperature. a. | Total | c. | Relative | b. | Partial | d. | none of the
above | | | | |
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31.
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When
air contains as much moisture as possible at a specific temperature, it is ____. a. | at its dew
point | c. | both a and
b | b. | saturated | d. | none of the
above | | | | |
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32.
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Areas
of low-pressure usually have ____. a. | cloudy weather | c. | descending air | b. | good
weather | d. | none of the
above | | | | |
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33.
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Violent storms generally form along ____. a. | warm
fronts | c. | occluded
fronts | b. | stationary fronts | d. | cold fronts | | | | |
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34.
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The
interaction of air, water, and ____ causes weather. a. | the
Sun | c. | land | b. | wind | d. | humidity | | | | |
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35.
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The
most powerful severe storm is the ____. a. | front | c. | hurricane | b. | tornado | d. | thunderstorm | | | | |
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36.
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____
forms when the air temperature is below freezing and water vapor changes directly to
solid. a. | Sleet | c. | Snow | b. | Hail | d. | Rain | | | | |
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37.
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The
temperature at which air is saturated and condensation forms is the ____. a. | relative
humidity | c. | rain
point | b. | dew point | d. | wind point | | | | |
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38.
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When
water droplets in a cloud combine, become too heavy, and fall to the ground as rain, snow, sleet, or
hail, we are experiencing ____. a. | precipitation | c. | condensation | b. | transpiration | d. | evaporation | | | | |
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39.
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Precipitation and storms occur ____. a. | in low-pressure
systems | c. | in high-pressure
systems | b. | at fronts | d. | in polar zones | | | | |
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40.
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A(n)
____ is a large body of air that has the same properties as the Earth's surface over which it
develops. a. | tornado | c. | front | b. | cloud | d. | air mass | | | | |
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41.
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Tornadoes can form when wind at different ____ blows in different directions and at
different speeds. a. | heights | c. | pressures | b. | temperatures | d. | none of the above | | | | |
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42.
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Clouds form as warm air rises, expands, cools, and becomes saturated, and then
____ condense(s) into tiny drops, which collect. a. | water vapor | c. | smog | b. | smoke | d. | snowflakes | | | | |
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43.
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A(n)
____ shows weather conditions at one specific location. a. | isobar | c. | cloud
map | b. | station
model | d. | isotherm | | | | |
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44.
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A
violent, whirling wind that moves in a narrow path over land is a ____. a. | hurricane | c. | tornado | b. | thunderstorm | d. | front | | | | |
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45.
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When
severe weather conditions already exist, a(n) ____ is issued. a. | advisory | c. | watch | b. | warning | d. | station model | | | | |
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46.
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____
forms when raindrops pass through a layer of freezing air near Earth's surface, forming ice
pellets.
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47.
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____
can be produced by thunderstorms. a. | Tornadoes | c. | Stationary fronts | b. | Volcanoes | d. | Tsunamis | | | | |
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48.
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Low,
layered gray clouds that produce light precipitation are ____ clouds. a. | nimbus | c. | cumulus | b. | stratus | d. | cirrus | | | | |
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