For ____ to occur, separate regions containing opposite electrical charges must exist within a cumulonimbus cloud.
a. lightning
b. thunder
c. sonic boom
d. hail during a thunderstorm
e. tornadoes
Q. 2The lightning stroke can heat the air through which it travels to an incredible 30,000 degrees Celsius (54,000 degrees Fahrenheit), which is ____ times hotter than the surface of the Sun.
a. 2
b. 3
c. 4
d. 5
e. 6
Q. 3The majority of lightning strikes occur within the cloud, while only about ____ percent or so occur between cloud and ground.
a. 5
b. 10
c. 15
d. 20
e. 25
Q. 4The greatest frequency of hailstorms in the United States is
a. over the western Great Plains.
b. along the Gulf Coast.
c. along the east coast
d. in the Rocky Mountain region.
e. along the west coast.
Q. 5One of the most common times to experience a thunderstorm in parts of Iowa and Missouri is between ____ and ____.
a. early morning; noon
b. noon; late afternoon
c. midnight; dawn
d. late afternoon; evening
e. evening; midnight
Q. 6It is estimated that more than ____ thunderstorms occur each day throughout the world.
a. 10,000
b. 20,000
c. 30,000
d. 40,000
e. 50,000
Q. 7Floods that develop rapidly with little or no advance warning are called ____ floods.
a. rapid
b. sudden
c. storm
d. thunderstorm
e. flash
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