weather fronts the boundary between 2 air masses with different temperatures brings about a change...
TRANSCRIPT
Weather Fronts
• The boundary between 2 air masses with different temperatures
• Brings about a change in weather
Warm Front
Passes slowly through an area
Cold Front
Passes quickly through an area…sometimes as fast as 100 km/hr
Stationary Front
Can remain stalled over an area for days
Occluded Front
Website – shows animated process
• http://www.phschool.com/atschool/phsciexp/active_art/weather_fronts/
Fronts – Another Website
• http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/af/frnts/wfrnt/def.rxml
Assignment
• Complete the Compare and Contrast on page 32 and the worksheets on pages 33-34
Cold Fronts Warm FrontsCOMPARE
•Both are boundary lines between 2 different air masses.•Both are formed when a warmer and a cooler air mass meet each other.•Both leave the temperature of the air different than before they arrived.•Both involve cloud formation and rain/snow.•Both create rising air.
CONTRAST
•Created when a cooler air mass overtakes a warmer air mass.•Warm air rises b/c it is pushed up by the cool air and b/c it is less dense.•Steeply sloping curved line front.•Heavy rain and wind.•Passes through quickly.•Cool, dry, and clear skies after•Mainly cumulus type clouds
•Created when warmer air mass overtakes a cooler air mass.•Warm air rises just b/c it is less dense.
•Gentle sloping straight lined front.•Light rain and wind.•Passes through slowly.•Warm, humid, and cloudy after.•Mainly stratus type clouds.
Warm Front ws
Description of a warm frontAnswers to worksheet
1. Warm2. Into/toward/over/thru3. Less4. Cold5. Cold6. Cools7. Front8. Front9. Cirrus
10. Sky11. Altostratus12. Rain13. Snow14. Nimbostratus15. Freezing Rain/hail16. Sleet17. Rises/increases/warms
Cold Front ws
Description of a Cold FrontAnswers to worksheet
1. Cold2. Slower3. Denser/more dense4. Up5. Air6. Vertical7. Moist8. Rise
9. Thick10. Slowly11. 10012. Long13. Temperature14. Winds15. Thunderstorms16. Tornadoes