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23 Cards in this Set
- Front
- Back
a cumulonimbus cloud does not perform any useful tasks. T/F |
false |
|
A cumulonimbus cloud has a definite design. T/F |
true |
|
The temperature inversion at the tropopause stops clouds from growing upward any farther. T/F |
true |
|
hailstones form only in clouds with strong updrafts. T/F |
true |
|
Hailstones are never larger than marbles. T/F |
false |
|
An electric current flows between opposite charges to balance them out. T/F |
true |
|
Lightning is often produced by cirrus clouds. T/F |
false |
|
A tornado's winds never exceed 50 miles per hour. T/F |
false |
|
Tornadoes are easy for forecasters to predict. T/F |
false |
|
During a thunderstorm, it is safe to take shelter underneath a very tall tree. T/F |
false |
|
It is extremely dangerous to be swimming during a thunderstorm. T/F |
true |
|
In seeking refuge from a tornado, a good general rule to follow is to get as low as possible. T/F |
true |
|
The broad, flat top of a cumulonimbus cloud |
anvil top |
|
The calm region of extremely low air pressure at the center of a tornado. |
eye |
|
bright flashes of light seen when the lightning bolts themselves are hidden in the cloud |
sheet lightning |
|
another name for the cumulonimbus cloud |
thunderhead |
|
a thin channel of charged air that zigzags down from the cloud |
step leader |
|
powerful currents of air produced by raindrops falling from a cumulonimbus cloud |
downdrafts |
|
sound made by superheated, rapidly expanding air in the lightning channel |
thunder |
|
issued when a tornado has been spotted |
tornado warning |
|
issued when weather conditions could produce a tornado |
tornado watch |
|
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. |
|
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. |