Fronts

Fronts

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

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

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

True or False: Stationary fronts try to move in the opposite direction, while occluded fronts move in the same direction

• True

• False

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

All fronts are associated with which pressure system?

• High

• Low

Multiple Select

Which front causes precipitation? (Check all that apply)

• Cold

• Warm

• Stationary

• Occluded

Multiple Choice

Which front has the densest air?

• Occluded

• Stationary

• Cold

• Warm