Weather

When a cold air mass moves toward a warm air mass it's called

Warm air

Scientists classify air masses according to two characteristics:

A tornado in the US is made from cold air masses from

A sudden spark, or energy discharge from a cloud is

A whirling, funnel-shaped cloud that reaches down from a cloud to touch Earth's surface is

What does the photo show?

A heavy rainstorm accompanied by thunder and lightning is called

Cold air masses form

75% of tornadoes on Earth occur in

Cold air

Continental air masses form

A swirling center of low air pressure is called

What does the photo show?

The area where the air masses meet and do not mix is called

This is a photo of what weather phenomena?

Hot and dry air masses form over

Hurricanes begin over

Maritime air masses form

This is a photo of what weather phenomena?

In the western Pacific Ocean, hurricanes are called

Warm air masses form

The word cyclone comes from the Greek word meaning

A violent disturbance in the atmosphere is called

Warm air masses from the Gulf of Mexico move

What type of cloud is this?

When a warm air mass quickly moves toward a cold air mass it's called

A dome of water that sweeps across the coast where the hurricane lands is called

A tropical storm that has winds of 75 mph or higher

This is a photo of what weather phenomena?