Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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An
air mass that formed over northern Mexico and affected the southwestern United States would be
a a. | maritime polar
air mass. | b. | maritime tropical air mass. | c. | continental
polar air mass. | d. | continental tropical air mass. | | |
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2.
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Warm
air masses that affect the west coast of the United States are called a. | maritime polar
air masses. | b. | maritime tropical air masses. | c. | continental
polar air masses. | d. | continental tropical air masses. | | |
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3.
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Cold,
dry air affecting the northern United States in winter often comes from a. | maritime polar
air masses. | b. | maritime tropical air masses. | c. | continental
polar air masses. | d. | continental tropical air masses. | | |
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4.
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When
a rapidly moving cold air mass runs into a slowly moving warm air mass, the
result is a(n) a. | cold front. | b. | occluded
front. | c. | warm front. | d. | stationary
front. | | |
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5.
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When
a warm air mass and a cold air mass meet and no movement occurs, the result is a(n) a. | occluded
front. | b. | warm front. | c. | stationary
front. | d. | cold front. | | |
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6.
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When
a warm air mass collides with a cold air mass, it forms a(n) a. | occluded
front. | b. | warm front. | c. | stationary
front. | d. | cold front. | | |
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7.
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One
difference between cyclones and anticyclones is a. | their size. | b. | where they
occur. | c. | the direction of their winds. | d. | how often they
occur. | | |
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8.
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Thunderstorms form within a. | high altocumulus clouds. | b. | high
cirrocumulus clouds. | c. | large cumulonimbus clouds. | d. | low cirrus
clouds. | | |
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9.
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A
funnel-shaped cloud that touches Earth's surface is called a a. | hurricane. | b. | cyclone. | c. | tornado. | d. | thunderhead. | | |
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10.
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To be
classified as a hurricane, a tropical storm must have winds of at least a. | 75
kilometers/hour. | b. | 100 kilometers/hour. | c. | 119
kilometers/hour. | d. | 139 kilometers/hour. | | |
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11.
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How
does lake-effect snow occur? a. | Warm, moist air blows over colder land and then over
water. | b. | Warm, dry air blows over large lakes and then over
land. | c. | Cold air blows over warm land and then over
water. | d. | Cold air blows over large lakes and then over
land. | | |
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12.
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Weather forecasting has improved recently because of a. | fewer weather
changes from year to year. | b. | more experienced weather forecasters. | c. | computer
technology. | d. | television reporting. | | |
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13.
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People who study weather and try to predict it are called a. | astronomers. | b. | climatologists. | c. | meteorologists. | d. | weather forecasters. | | |
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14.
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Collecting of weather data in the last 40 years has been improved mostly
by a. | balloons and
satellites. | b. | more people who study clouds. | c. | military
aircraft. | d. | astronaut observations. | | |
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15.
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Isobars are lines on a map joining places that have the same a. | wind
speed. | b. | temperature. | c. | humidity. | d. | air pressure. | | |
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16.
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Small
lines at the end of the shaft that represents wind direction on a weather map
indicate a. | temperature. | b. | wind speed. | c. | pressure. | d. | humidity. | | |
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17.
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On
weather maps, a line with half circles indicates a. | a hurricane. | b. | a cold
front. | c. | a warm front. | d. | snow. | | |
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18.
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A
cloud cover symbol that is 3/4 black and 1/4 white represents a. | 20-30 percent
cloud cover. | b. | 50-60 percent cloud cover. | c. | 70-80 percent
cloud cover. | d. | 90-100 percent cloud cover. | | |
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19.
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Places shown on a weather map that have the same temperature are connected
by a. | thermolines. | b. | isobars. | c. | thermobars. | d. | isotherms. | | |
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Modified True/False
Indicate
whether the sentence or statement is true or false. If false, change the identified word or
phrase to make the sentence or statement true.
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20.
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Cold,
humid air masses that bring fog to the West Coast are continental polar air masses.
_________________________
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21.
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At a
warm front, warm air meets and moves over cold air. _________________________
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22.
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Rain
or snow usually is associated with falling air pressure.
_________________________
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23.
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On a
weather map, isobars join places that have the same air pressure.
_________________________
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Completion
Complete each sentence or
statement.
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24.
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A
long-lasting storm that begins over the warm surface of the ocean and has winds of 119 kilometers per
hour or higher is a(n) ____________________.
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25.
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On a
weather map, places that have the same temperature are joined with lines called
____________________.
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26.
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A
weather map uses triangles and half-circles to show the type and direction of movement of
____________________.
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27.
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On
newspaper weather maps, colors are often used to indicate ____________________ ranges for different
areas.
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Essay
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28.
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Compare and contrast a cold front and a warm front.
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29.
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What
are the "highs" and "lows" indicated on weather maps of the Northern Hemisphere?
How does each one form?
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30.
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Compare and contrast maritime tropical and continental tropical air
masses.
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