Exam 10: Thunderstorms and Tornadoes

A line of thunderstorms that forms ahead of an advancing cold front is called a ____.

When the air is dry, tornadoes can remain invisible until they reach the ground and pick up dust.

The majority of lightning strikes occur ____.

A cloud-to-ground lightning discharge will sometimes appear to flicker. This is because ____.

The downdraft in an ordinary cell thunderstorm is created mainly by ____.

Instructions: Choose one answer from each pair of selections. In an average year you would expect the highest incidence of severe thunderstorms in FLORIDA | OKLAHOMA.

Thunder is caused by ____.

A supercell storm is a(n) ____.

Instructions: Choose one answer from each pair of selections. The greatest potential for flooding is with thunderstorms that are FAST | SLOW moving.

If you see lightning and then, 15 seconds later, hear the thunder, the lightning stroke is about ____ miles away.

You are generally safe inside an automobile during a lighting storm because ____.

The greatest annual number of thunderstorms in the United States occurs in ____.

What are the three basic ingredients of all thunderstorms? Describe at least three potential forcing mechanisms.

An ordinary cell thunderstorm is a ____.

Differentiate between tornado families and tornado outbreaks.

Instructions: Choose one answer from each pair of selections. The strongest tornadoes in the United States occur in the SPRING | FALL.

Instructions: Choose one answer from each pair of selections. An anvil cloud forms near the top of a thunderstorm where the thunderstorm cloud reaches a STABLE | UNSTABLE region of the atmosphere.

____ measures the speed at which precipitation is moving toward or away from an antenna.

What would you expect to observe during the passage of a gust front?

A hook-shaped echo on a radar screen often indicates ____.