Exam 15: Tornadoes

When viewed from above, the majority of North American tornadoes rotate ____________________ about their central core of low pressure.

The final stage of a tornado life cycle is called the ____________________ stage, when usually the tornado is stretched into the shape of a rope.

A ____ is a rotating column of air that is connected to a cumuliform cloud over a large body of water.

What are some things you should do if you encounter a tornado while you are outside? What if you are in a building?

When a tornado is approaching from the southwest, its strongest winds are on its ____________________ side.

If a downdraft is too ____, it may inhibit the lifting needed for tornado formation.

How does the Enhanced Fujita Scale classify tornadoes?

Landspouts are weak, short-lived tornadoes that occur with rapidly building ____ clouds in places such as the High Plains.

As air rushes upward and spins around the low-pressure core of a tornado vortex, the air expands, cools, and, if sufficiently moist, condenses into a(n)____________________.

Explain the types of products the National Weather Service issues in regards to tornadoes.

A tornado ____________________ is issued once a tornado is spotted, either visually or on a radar screen.

The deadliest tornadoes are those that occur in ____________________, which is a group or series of tornadoes spawned by the same thunderstorm.

Violent tornadoes (with winds exceeding 180 knots)that contain smaller whirls rotating within them are called ____.

In the United States, tornadoes are most frequent during the ____, and least frequent during the ____.

The wisest course to take when confronted with an approaching tornado is to ____________________.

A(n)____________________ is a rotating column of air that is connected to a cumuliform cloud over a large body of water.

Even the most powerful twisters seldom have winds exceeding ____ knots.

Most often, tornadoes form with supercell thunderstorms in an environment with strong ____________________.

No country experiences more tornadoes than ____.

The belt of tornadoes that occurs over Mississippi and Alabama is sometimes called tornado alley.