Weather Fronts

Weather Fronts

Cold Warm Stationary Occluded

​Weather Symbols

Fronts

Front: boundaries of air masses Differ by temperature, density, and humidity

• The weather we experience depends on which front is dominant 
• Fronts bring precipitation

Cold Front

• A Cold air masses pushes a warm air mass upward

• The air & weather becomes cooler

• Heavy precipitation and storms follow

• Tall cumulonimbus clouds form because the wind is pushing air & water vapor upward

Multiple Choice

During a cold front you are likely to experience...

• Thunderstorm

• Light drizzle

• Sunny Weather

Multiple Choice

What kind of weather happens during a cold front?

• Light rain or light snow
• Heavy rain or heavy snow
• Clear skies, temp. warms
• Clear skies, temp. cools

Multiple Choice

What kind of weather happens after a cold front moves out?

• Light rain or light snow
• Heavy rain or heavy snow
• Clear skies, temp. warms
• Clear skies, temp. cools

Warm Front

• A warm air mass overtakes a cold air mass

• The temperature warms as cold air is pushed back

• Water vapor causes high humidity

• Precipitation is milder (ex. drizzles)

Multiple Choice

A warm front...

• replaces warm air with cool air

• replaces cool air with warm air

Multiple Choice

What kind of weather happens during a warm front?

• Light rain or light snow
• Heavy rain or heavy snow
• Clear skies, temp. warms
• Clear skies, temp. cools

Multiple Choice

What kind of weather happens after a warm front moves out?

• Light rain or light snow
• Heavy rain or heavy snow
• Clear skies, temp. warms
• Clear skies, temp. cools

Stationary Front

• A warm and cold air mass meet trying to move in opposite directions

• Neither is moved

• Heavy storms & precipitation can last for days

Multiple Choice

Which symbol represents a stationary front?

Multiple Choice

Stationary Fronts

• Warm air mass is stronger

• Cold Air Mass is stronger

• Neither is stronger, so it doesn't move

Occluded Front

• A warm air mass is caught between 2 cold air masses

• Cold air masses rise over the warmer

• Strong winds and heavy precipitation result

Multiple Choice

In an Occluded Front,

• a warm air mass gets caught between two cold air masses

• a cold air mass gets caught between two warm air masses

• there is only cold air

Multiple Choice

In an occluded front

• warm air is pushed higher by cold air

• cold air is pushed higher by warm air

• the air clashes and doesn't move

Multiple Choice

What type of front does this symbol represent?

• Cold Front

• Occluded Front

• Stationary Front

• Warm Front

Multiple Choice

Which front has the densest air?

• Occluded

• Stationary

• Cold

• Warm

Multiple Choice

What happens when warm air rises?

• it warms up, causing more evaporation

• it cools down, and can't hold as much moisture

Multiple Select

Which front causes precipitation? (Check all that apply)

• Cold

• Warm

• Stationary

• Occluded

Multiple Choice

Cold and warm air masses meet, but neither mass can move the other. The two air masses face each other in a “standoff.”

• Cold Front

• Stationary Front

• Occluded Front

• Warm Front

Multiple Choice

What type of front is pictured here?

• Cold Front

• Occluded Front

• Stationary Front

• Warm Front