Weather Fronts

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Weather Fronts
Teacher Page

• Science 8th Grade

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Teacher Page

• Science
• 6th Grade
• Created by Paula Smith
• VI.A.2, VI.B.2/SC 5
• This presentation is intended to introduce or
  review material. The student will identify each
  type of front on a weather map using their
  symbols, determine which way the front is moving,
  and predict relative temperature using a weather
  map.

Start
End
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Dew Point and Cloud Formation

• Dew Point The temperature at which water
  condenses (turns to liquid).
• Like sweat on a can of soda.
• Usually happens at cold temperatures
• Clouds form when water cools down to the dew
  point.
• As air rises it gets colder, water condenses, and
  clouds form.

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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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Frontal Boundaries

• Where air masses interact also known as a
  front.
• 4 kinds of fronts
• Cold front
• Warm front
• Occluded front
• Stationary front

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Cold Front
Back to activity

• A cold air mass is replacing a warmer air mass.
• Shown on a weather map by a blue line with
  triangles pointing the direction the cool air is
  moving.

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Warm Front
Back to activity

• Warm air mass replacing a cooler air mass.
• Shown on a weather map by a red line with half
  circles pointing the direction the warm air is
  moving.

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Occluded Fronts

• When a warm front is trapped by 2 cold fronts.
• Shown on a weather map by a purple line with
  alternating triangles and semicircles pointing
  the direction the front is moving.

Back to activity
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Stationary Fronts
Back to activity

• A front that stops moving or is moving very
  slowly.
• Shown on a weather map with alternating red
  semicircles pointing away from the warm air and
  blue triangles pointing away from the cold air.

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Isobars

• Isobars Lines connecting equal points of air
  pressure.
• H High Pressure
• L Low Pressure
• -Where is the rain?
• High or Low pressure?

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Isotherms

• Isotherms Lines connecting equal points of
  temperature.

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Locate the 4 types of fronts on this weather map.
Hint 1
Hint 2
Hint 3
Hint 4
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Cold Fronts
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Warm Front
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Stationary Front
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Occluded Front
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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.
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Be a Weather Forecaster
There is a cold front approaching. The
temperatures will probably be cooler behind the
front.
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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.