Lesson 5/6 (Atmos. Moisture/Precipitation/Air Masses/Fronts

What type of weather are the upper part of Africa and the lower half of Asia most likely experiencing, based on the image?

• rainfall

• cold breezes

• dry heat

• thunderstorms

What causes air masses to move?

• A collision takes place between two natural wind patterns.

• Long, narrow bands of wind blow in the upper atmosphere.

• A difference in air pressure and temperature occurs.

• Weather conditions change rapidly to produce storms.

Based on the arrows, in which direction are air masses moving? Study Image.

• toward the equator

• toward the middle latitude

• from north to south

• from west to east

At which point is cool air circulating beneath warm air? Study Image.

• 1

• 2

• 3

• 4

Which front forms widespread clouds, rain, or snow?

• warm front

• cold front

• occluded front

• stationary front

The images show 2 different fronts. Which fronts are shown?

• Item A shows a cold front, and item B shows a warm front.

• Item A shows an occluded front, and item B shows a cold front.

• Item A shows a warm front, and item B shows a stationary front.

• Item A shows a stationary front, and item B shows an occluded front.

Study the image of 2 different fronts. Based on arrow movement, why is the front shown in item A different from the front shown in item B?

• Cold air mixes with warm air in item A, while two air masses barely move in item B.

• Two air masses form a boundary in item A, while warm air rises above cold air in item B.

• Warm air rises above cold air in item A, while two air masses collide in item B.

• Warm air is pushed upward near cold air in item A, while a boundary forms in item B.

Study the image, which shows an air mass moving into a region. What type of weather will this region most likely experience due to the incoming air mass?

• thunderstorms and heavy rain

• sunny skies with warm air

• thick fog with cold air

• cooler temperatures with no rain

Which major type of air mass typically brings cool, dry weather?

• maritime polar

• continental polar

• maritime tropical

• continental tropical

Which kind of weather usually forms over the northwest United States in the summer because of maritime polar air masses?

• heavy snow

• heavy rain

• dry heat

• fog