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Clouds Quiz
1) ________________ is the amount of water vapor in the air in particular spot.
2) ________________ is the temperature at which air becomes saturated with
water.
3) How do clouds have an influence on weather?
a) Prevents solar radiation from reaching the ground
b) Absorbs warmth emitted from the ground
c) A source of precipitation
d) All of the above.
4) Clouds are classified by
a) Altitude
b) Height
c) Color
d) Water content
5) Fog forms when
a) Warm air meets cold ground or water.
b) Cold air meets warm ground or water.
c) Warm moist air cools below its dew point.
d) All of these.
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6) What do you expect cumulonimbus clouds to be like?
a) A high cloud made of ice crystals.
b) A thick and broad cloud that is gray and precipitating.
c) A cloud that is growing vertically and that is precipitating; a thundercloud.
d) A low cloud that is thick and dark and that is bringing heavy rain or snow.
7) When the humidity reaches 100%, water will precipitate.
a) True
b) False
8) Which of the following describes relative humidity?
a) The amount of water vapor that air can hold before it begins to precipitate.
b) The amount of water vapor in air relative to the total amount it can contain.
c) The total amount of water vapor in a certain volume of air.
d) The temperature of the air relative to the temperature when the air is saturated with
water.
9) Clouds form when air reaches its dew point. This happens when
a) Air temperature stays the same but humidity increases.
b) Humidity stays the same but temperature decreases.
c) Air temperature increases but humidity decreases.
d) A & B
10) Some early mornings, dew drops can be found on grass (or on a car parked
outside), but not on other materials like sidewalks. What has happened?
a) The nighttime temperature on grass and the car went below the dew point, but the
concrete did not.
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b) The region went below the dew point but the sun in the morning caused some of the
dew to evaporate.
c) The relative humidity of the air above the grass and car was higher than it was over the
concrete.
d) None of these.
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