8 - weather systems - fronts.notebook
TRANSCRIPT
8 Weather systems fronts.notebook
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Unit 2
TODAY
• Review
• The Atmosphere
• Weather Fronts
• Challenge!
Earth and Space Science: Weather dynamics
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Review
2. Hygrometer : A device used to measure humidity.
3. Baromoter : A device used to measure the atmospheric pressure.
1. Thermometer: A device used to measure temperature.
4. Wind vane : Shows the direction of the wind.
5. Anemometer : Measures the speed of wind.
6. Rain gauge : Records how much rain or snow has fallen.
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Weather Terminology p.206209
• Special Weather words to help you understand!
• Weather systems are a set of temperature, wind, pressure, and moisture conditions.
These systems affect an area for a time (e.g. days).
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• Weather systems are made of air masses that have the same temperature and humidity.
• This air can be 100 to 1000 km across.
Weather Terminology p.206209
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Weather Terminology
• When two of these air masses meet they form a front between them.
• 1. Cold front Forms when cold air pushes under warm air.• Cold fronts usually mean stormy weather followed by cool, fair weather.
Warm frontCold front
Cold frontSymbol:
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Weather TerminologyWarm front
Cold front
• 2. Warm front Forms when warm air slowly rises over cold air.
• Warm fronts usually mean rain followed by warm humid weather
Symbol: Warm front
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Questions
What will the weather be like if a warm front is over you?
What is the difference between a warm front and a cold front?
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Let's watch some weather forecasts to apply our knowledge!
http://www.theweathernetwork.com/news/articles/nextbigstormthreatensatlanticcanadawithsnowwind/62834/
https://www.youtube.com/watch?v=GyXP8bmBTC8