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23 Cards in this Set
- Front
- Back
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a cumulonimbus cloud does not perform any useful tasks. T/F |
false |
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A cumulonimbus cloud has a definite design. T/F |
true |
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The temperature inversion at the tropopause stops clouds from growing upward any farther. T/F |
true |
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hailstones form only in clouds with strong updrafts. T/F |
true |
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Hailstones are never larger than marbles. T/F |
false |
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An electric current flows between opposite charges to balance them out. T/F |
true |
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Lightning is often produced by cirrus clouds. T/F |
false |
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A tornado's winds never exceed 50 miles per hour. T/F |
false |
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Tornadoes are easy for forecasters to predict. T/F |
false |
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During a thunderstorm, it is safe to take shelter underneath a very tall tree. T/F |
false |
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It is extremely dangerous to be swimming during a thunderstorm. T/F |
true |
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In seeking refuge from a tornado, a good general rule to follow is to get as low as possible. T/F |
true |
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The broad, flat top of a cumulonimbus cloud |
anvil top |
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The calm region of extremely low air pressure at the center of a tornado. |
eye |
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bright flashes of light seen when the lightning bolts themselves are hidden in the cloud |
sheet lightning |
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another name for the cumulonimbus cloud |
thunderhead |
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a thin channel of charged air that zigzags down from the cloud |
step leader |
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powerful currents of air produced by raindrops falling from a cumulonimbus cloud |
downdrafts |
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sound made by superheated, rapidly expanding air in the lightning channel |
thunder |
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issued when a tornado has been spotted |
tornado warning |
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issued when weather conditions could produce a tornado |
tornado watch |
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What is the safest place to be during a tornado if you are in a house? |
While in a house, the safest place to be is in the center of the house, in a small room or hallway without windows. A basement is also a safe place to be, as long as you are away from windows. |
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What safety precautions should you take during a thunderstorm? |
Remain indoors. Do not use the telephone of other electrical appliances. Stay away from water; do no swim, shower, or bathe. If you are caught outdoors, avoid being the tallest object around. Stay away from high ground, open areas, and tall objects. A car is a safe place to be. |
