Weather Day 4b - Air Masses

Air Masses

How do we describe the air?

Review - Weather

• Weather describes the air outside today.

• Weather happens in the atmosphere.

• Temperature is how hot or cold the air is.

• Humidity measures how much water vapor is in the air.

• We can also say humidity describes how wet or dry the air is.

Multiple Choice

How hot or cold the air is

• Humidity

• Temperature

Multiple Choice

How wet or dry the air is

• Humidity

• Temperature

Multiple Choice

Water in the air is called...

• Ice

• Liquid Water

• Water Vapor

Review - Temperatures on Earth

• The coldest places on Earth are near the Poles. We call these areas Polar.

• The warmest places on Earth are near the Equator. We call these areas Tropical.

Multiple Choice

These areas never get direct sunlight, so they are always cold.

• Polar

• Tropical

Multiple Choice

These areas always get direct sunlight, so they are always hot.

• Polar

• Tropical

Multiple Choice

Tropical means near the _____.

• Poles

• Equator

Review - Land and Water

• Earth has 7 continents. We call areas near land Continental.

• Earth has 5 oceans. We call things near the ocean Maritime.

Multiple Choice

Areas near dry land are called _____.

• Continental

• Maritime

Multiple Choice

Areas near the wet oceans are called _____.

• Continental

• Maritime

Multiple Choice

Continental areas are

• Wet

• Dry

Multiple Choice

Maritime areas are

• Wet

• Dry

Air Mass

• An air mass is a large area of air that has the same temperature and humidity.

• Air masses can be hundreds or thousands of miles wide.

• Air mass temperatures can be polar or tropical.

• Air mass humidities can be continental or maritime.

• An air mass's temperature and humidity depends on earth's surface below.

Multiple Choice

An air mass that is wet and cold is...

• Maritime Tropical

• Maritime Polar

• Continental Tropical

• Continental Polar

Multiple Choice

An air mass that is dry and cold is...

• Maritime Tropical

• Maritime Polar

• Continental Tropical

• Continental Polar

Multiple Choice

An air mass that is dry and hot is...

• Maritime Tropical

• Maritime Polar

• Continental Tropical

• Continental Polar

Multiple Choice

An air mass that is dry and cold is...

• Maritime Tropical

• Maritime Polar

• Continental Tropical

• Continental Polar

Open Ended

Describe one type of air mass.

(Example: A tropical continental air mass is hot and dry.)