Air Masses, Pressure and Fronts

Which of the following is a characteristic of Continental air masses?

• Moist

• Dry

• Cold

• Warm

Fill in the blank: Maritime air masses are characterized as ______.

• Dry

• Moist

• Cold

• Warm

Which of the following is a characteristic of high pressure systems?

• A) Ascending air

• B) Descending air

• C) Stormy weather

• D) Unstable conditions

High pressure systems in the Northern Hemisphere rotate in a _______ direction.

• Counterclockwise

• Clockwise

• Random

• Vertical

Which of the following is a characteristic of low pressure systems?

• A) Rising air

• B) Stable conditions

• C) Clockwise rotation

• D) Clear skies

Low pressure systems in the Northern Hemisphere rotate in a _______ direction.

• A) Clockwise

• B) Counterclockwise

• C) Upward

• D) Downward

What is a pressure gradient?

• The difference in temperatures between two areas

• The difference in pressures between two areas

• The difference in humidity between two areas

• The difference in altitudes between two areas.

Isobars connect points of equal pressure on a map, typically given in ________.

• millimeters

• millibars

• centimeters

• meters

What does the letter 'H' represent on a weather map?

• Low-pressure system

• High-pressure system

• Cold front

• Warm front

On a weather map, the wind flows from areas of _______ pressure to areas of low pressure.

• high

• medium

• equal

• variable