1. Teacher
Page
Weather Fronts
Science 7th Grade

2. Air Mass A large body of air with similar temperature and moisture.
Air masses form over large land or water masses.
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3. Frontal Boundaries
The boundary where two different air masses meet is know as a front.
4 kinds of fronts:
Cold front
Warm front
Occluded front
Stationary front
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4. Cold Front A cold air mass is replacing a warmer air mass.
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A cold air mass is replacing a warmer air mass.
Bring thunderstorms, heavy rain, or snow and after the weather is cooler

5. Bring drizzly precipitation and after weather is clear and warm.
Warm Front
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Warm air mass replacing a cooler air mass.
Bring drizzly precipitation and after weather is clear and warm.
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6. Comparing Warm and Cold Fronts
Cold fronts move faster than warm fronts.
The weather activity in a cold front is often violent and happens directly at the front.
Cold fronts have sudden gusty winds high in the air creating turbulence.
The weather activity in a warm front generally happens before the front passes.
In a warm front the cloud formation is very low often creating situations of poor visibility.
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7. Occluded Fronts When a warm front is trapped by 2 cold fronts.
Brings cool temperatures and large amounts of rain.
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8. Back to
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Stationary Fronts
A front that stops moving or is moving very slowly, occurs when warm and cold front meet.
Weather conditions similar to warm front, light rain followed by clear and warm conditions.
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9. Locate the 4 types of fronts on this weather map.
Hint 1
Hint 2
Hint 3
Hint 4

10. Cold Fronts

11. Warm Front

12. Stationary Front

13. Occluded Front

14. Be a Weather Forecaster
You are planning to travel to Alabama in 2 days. The high temperature there for today is 68º F.
Use the map to help you predict whether the temperature in Alabama will increase, decrease, or stay the same. Explain why you think so.
Weather Fronts

15. Be a Weather Forecaster
There is a cold front approaching. The temperatures will probably be cooler behind the front.

16. Be a Weather Forecaster
Of course, meteorologists (weather forecasters) use much more data than fronts and air masses to help them forecast the weather more accurately. But any forecast is just a prediction of what might happen. Even with the best data, weather forecasts can be wrong.
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17. Credits (Whole Power Point from:)
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Weather Fronts