Understanding Weather Systems

What is the definition of Air Masses?

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What is the definition of Fronts?

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What is the definition of Air Pressure?

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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?

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What symbols represent high and low pressure areas?

• H for high pressure

• L for low pressure

What do isobars indicate?

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What is the unit of temperature?

• Fahrenheit

• Celsius

What does precipitation indicate on a weather map?

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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.