T9L4: Air Masses and Fronts Quiz

Which of the following BEST describes an air mass as a large body of air?

• different temperature and same moisture

• same temperature and different moisture

• different temperature and different moisture

• same temperature and same moisture

A warm air mass is caught between two cooler air masses. What kind of front is BEST shown in the image?

• Cold Front

• Occluded

• Warm Front

• Stationary Front

What happens when a cold air mass and a warm air mass bump into each other and stop moving?

• a cold front occurs

• a warm front occurs

• a stationary front occurs

• a bib front occurs

Which of the following does NOT describe a high-pressure system?

• A whirling mass of cool, dry air that generally brings fair weather and light winds.

• A high-pressure system is represented as a big, blue H.

• When viewed from above, winds spiral into a low-pressure center in a counterclockwise rotation in the Northern Hemisphere.

• When viewed from above, winds spiral out of a high-pressure center in a clockwise rotation in the Northern Hemisphere. These bring sunny skies.

Which of the following does NOT describe a low-pressure system?

• A low-pressure system is represented as a big, red L.

• A whirling mass of warm, moist air that generally brings stormy weather with strong winds.

• When viewed from above, winds spiral into a low-pressure center in a counterclockwise rotation in the Northern Hemisphere.

• When viewed from above, winds spiral out of a high-pressure center in a clockwise rotation in the Northern Hemisphere. These bring sunny skies.

Which of the following BEST describes air mass?

• It is usually a line of separation between warm and cold air masses.

• It is a boundary between two different air masses, resulting in stormy weather.

• It stalls for several days with warm air on one side and cold on the other side of it.

• It is an extremely large body of air whose properties of temperature and moisture content (humidity), at any given altitude, are fairly similar in any horizontal direction.

Which of the following statements does NOT describe air masses?

• Air masses cover large (hundreds of miles) areas.

• Air masses are lines of separation between warm and cold air masses.

• Air masses control the weather for a relatively long time period: from a period of days to months.

• Most weather occurs along the periphery of these air masses at boundaries called fronts.

Which of the following BEST describes a front?

• A front is a boundary between two different air masses, resulting in stormy weather.

• A front covers large (hundreds of miles) areas.

• A front controls the weather for a relatively long time period: from a period of days to months.

• A front is an extremely large body of air whose properties of temperature and moisture content (humidity), at any given altitude, are fairly similar in any horizontal direction.

Which of the following statements BEST describes a warm front?

• It is when a colder air mass moves toward a warmer air mass.

• It is when warmer air moves towards cooler air.

• It is when a fast-moving cold front catches up to a slow-moving warm front.

• It stalls for several days with warm air on one side and cold on the other side of it.

Which of the following statements BEST describes a stationary front?

• It is when a colder air mass moves toward a warmer air mass.

• It is when warmer air moves towards cooler air.

• It is when a fast-moving cold front catches up to a slow-moving warm front.

• It stalls for several days with warm air on one side and cold on the other side of it.