True/False
Indicate whether the sentence or statement is true or false.
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1.
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On a weather map, isobars join places that have the same air pressure.
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2.
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Warm fronts are shown on a weather map as a string of triangles.
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3.
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Cold fronts are shown on a weather map as a string of semi-circles.
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4.
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An occluded front is shown on a weather map as a mixture of triangles and semi-circles on the same side.
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5.
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A stationary front is shown on a weather map as a line with triangles and semi-circles on opposite sides.
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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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6.
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Weather forecasting has improved recently because of
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a.
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fewer weather changes from year to year.
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c.
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computer technology.
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b.
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more experienced weather forecasters.
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d.
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television reporting.
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7.
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People who study weather and try to predict it are called
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a.
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astronomers.
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b.
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climatologists.
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c.
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meteorologists.
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d.
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weather forecasters
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8.
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Collecting of weather data in the last 40 years has been improved mostly by
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a.
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balloons and satellites.
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c.
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military aircraft.
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b.
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more people who study clouds.
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d.
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astronaut observations.
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9.
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Isobars are lines on a map joining places that have the same
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a.
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wind speed.
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b.
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temperature.
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c.
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humidity.
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d.
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air pressure.
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10.
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Small lines at the end of the shaft that represents wind direction on a weather map indicate
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a.
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temperature.
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b.
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wind speed.
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c.
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pressure.
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d.
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humidity.
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11.
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On weather maps, a line with half circles indicates
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a.
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a hurricane.
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b.
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a cold front.
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c.
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a warm front.
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d.
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snow.
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12.
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A cloud cover symbol that is 3/4 black and 1/4 white represents
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a.
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20-30 percent cloud cover.
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b.
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50-60 percent cloud cover.
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c.
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70-80 percent cloud cover.
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d.
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90-100 percent cloud cover.
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13.
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Places shown on a weather map that have the same temperature are connected by
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a.
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thermolines.
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b.
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isobars.
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c.
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thermobars.
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d.
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isotherms.
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14.
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Air in the atmosphere has pressure because
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a.
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the stratosphere is thick.
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c.
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wind moves the air.
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b.
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air has mass.
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d.
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temperature warms the air.
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15.
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The less mass in a given volume of air, the
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a.
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more the air weighs.
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c.
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more dense the air.
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b.
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greater the air pressure.
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d.
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less dense the air.
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16.
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The air pressure acting on the roof of your house comes from .... or is .....
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a.
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air within a few feet of your rooftop.
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c.
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air above and below your roof.
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b.
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greater on top of the roof than below it.
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d.
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greater underneath roof than on top of it.
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17.
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The National Weather Service measures air pressure in units called
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a.
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aneroids.
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b.
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barometers.
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c.
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millibars.
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d.
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pressure bars.
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18.
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Instruments used to measure air pressure are called
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a.
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thermometers.
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b.
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hygrometers.
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c.
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hydrometers.
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d.
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barometers.
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19.
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Winds are caused by differences in
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a.
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precipitation.
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b.
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humidity.
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c.
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air pressure.
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d.
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turbulence.
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20.
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Wind speed is measured by a(an)
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a.
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barometer.
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b.
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anemometer.
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c.
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thermometer.
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d.
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hygrometer.
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21.
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Local winds differ from global winds because they are caused by
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a.
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unequal heating within a small area.
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c.
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unequal rainfall.
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b.
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differences in cloud cover.
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d.
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air masses.
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22.
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Land breezes occur because
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a.
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land cools off faster than water.
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c.
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land heats up faster than water.
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b.
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land cools off more slowly than water.
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d.
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land heats up more slowly than water.
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23.
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Earth's rotation makes winds seem to curve. This is called the
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a.
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convection effect.
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b.
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global effect.
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c.
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Coriolis effect.
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d.
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rotational effect.
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24.
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Relative humidity can be measured with a
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a.
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hydrometer.
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b.
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barometer.
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c.
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psychrometer.
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d.
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thermometer.
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Matching
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25.
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Warm front heading east
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26.
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Isobar
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27.
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Cold front heading south
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28.
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Isotherm
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29.
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Occluded front
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30.
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Stationary front
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