Air masses and Fronts

Multiple Choice

Which pressure system can produce storms?

• low pressure system
• high pressure system

Multiple Choice

As you climb up a mountain what happens to the air pressure?

• decreases
• increases
• stays the same

Multiple Choice

As you go deeper in the ocean, the water is colder and less salty.

• True
• False

Multiple Choice

The process in which water vapor is released into the atmosphere through plants.

• evaporation

• transpiration

• condensation

• precipitation

Multiple Choice

What process is happening step B?

• transpiration

• precipitation

• condensation

Multiple Choice

An air mass is

• a large body of air with about the same temperature and humidity throughout

• the amount of moisture in the air

• a place where two different air masses meet

• a cold air mass that bumps against a warm air mass

Multiple Choice

What is a front?

• A place where air masses meet
• the front part of a storm
• An area of very high wind
• an area that has fair weather

Multiple Choice

When a cold front is approaching, what happens?

• warm air is pushing under cold air causing humid weather and lower temperatures
• warm air is pushing under cold air causing humid weather and higher temperatures
• Cold air pushed warm air up and it cools & which causes thunderstorms

• cold air is pushed over warm air causing rain and thunderstorms

Multiple Choice

What is a warm front?

• a cold air mass bumps against a warm air mass

• a warm air mass meets a colder air mass and slowly rises over it

• two air masses meet and stop moving

• warm air mass gets caught between 2 cold air masses

Multiple Choice

What happens at a stationary front?

• A warm air mass and cold air mass meet, but neither moves

• Two cold air masses are on either side of a warm air mass

• Cold, dense air pushes warm air upwards

• Warm air catches up to cold air and slides over it

Multiple Choice

What happens at an occluded front?

• A warm air mass and cold air mass meet, but neither moves

• Two cold air masses are on either side of a warm air mass

• Cold, dense air pushes warm air upwards

• Warm air catches up to cold air and slides over it

Let's Apply our learning

Multiple Choice

What type of weather might be expected during a warm front?

• Light rain showers that last for a couple of days

• Heavy thunderstorms or ice storms followed by cold temperatures

• Light rain showers followed by warmer temperatures

• Clear dry weather

Multiple Choice

What type of weather might be expected during a stationary front?

• Light rain showers that last for a couple of days

• Heavy thunderstorms or ice storms followed by cold temperatures

• Light rain showers followed by warmer temperatures

• Clear dry weather

Multiple Choice

Name that symbol.

• Cold Front

• Warm Front

• Stationary Front

• Occluded Front

Multiple Choice

Which type of front is pictured?

• Cold front
• Warm front
• Occluded front
• Stationary front

Multiple Choice

Why do thunderstorms often occur with cold fronts?

• Because cold air is lighter than warm air

• Because warm air is forced to rise quickly over cold air

• Because cold air absorbs moisture from the ground

• Because warm air sinks below cold air