Understanding Weather Systems

What is the definition of Air Masses?

What is the definition of Fronts?

What is the definition of Air Pressure?

What are the types of Air Pressure Systems?

• High pressure systems create more pressure on Earth and are more dense (sinks), resulting in clear skies.

• Low pressure systems create less pressure on Earth’s surface and are less dense (rises), resulting in more moisture & precipitation.

What do the front symbols represent?

What symbols represent high and low pressure areas?

• H for high pressure

• L for low pressure

What do isobars indicate?

What is the unit of temperature?

• Fahrenheit

• Celsius

What does precipitation indicate on a weather map?

How does a cold front form?

• When a cold air mass runs into a warm air mass.

• When a warm air mass overtakes a cold air mass.