Earth Science Chapter 20 Review

A large body of air in the troposphere that has more or less uniform humidity and temperature is called a(n) _________.

• air mass

• front

• jet stream

• cyclone

The symbols for a front on a weather map point toward the advancing air mass.

• True

• False

If your town is in the path of a strong hurricane, the worst thing you could do would be

• to drive inland an hour before it is expected to hit.

• to ride out the storm.

• to drive inland six hours before it is expected to hit.

• to drive to an area to the left of the storm’s expected track.

The weather in an area stays virtually the same for an entire week. What kind of front probably exists between the nearby air masses?

• cold

• occluded

• stationary

• warm

Most interactions among air masses cause precipitation.

• True

• False

Where do air masses gain their temperature and humidity properties?

• in convective zones

• from the jet stream

• in their source regions

• at fronts

What are the greatest destructive features of a tornado?

• high-speed rotating wind and updraft

• heavy rainfall and flooding

• intense lightning and thunder

• large hailstones

Air masses of differing temperatures and humidities often mix.

• True

• False

When in the life of a hurricane does its power and wind speed diminish?

• When they move over land or cooler water

• When they move over warm water

• When they are far from the equator

• When the air pressure increases

Nor'easters are cyclonic storms that sweep moisture from the Atlantic and drop it as snow.

• True

• False