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Learn about different air masses, front types, and associated weather patterns. Explore cloud demonstrations and practice problems to describe weather phenomena. Complete exit ticket to reinforce learning.
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Science Starter • Which type of air is more dense, warm air or cold air? • Complete the boxes below by drawing particles for the different air temperatures using your answer from #1 • If you are fighting on the frontline in a war, what does that mean? Cold Air Warm Air
Agenda • Warm Up & Agenda • Astronomy Quiz • Explore: Cloud in a Bottle Demo • Fronts Diagram and Presentation • Why You Frontin’? • Practice Problems • Exit Ticket
Objective Students will be able to describe the weather patterns associated with warm and cold fronts
Cloud in a Bottle Demo • http://www.youtube.com/watch?v=msSVQ903T8k • What changes in the bottle do you observe? • Why do these changes in the bottle to occur?
Air Masses Notes • Air mass: • a large body of air with similar temperatures and amount of moisture • As it moves, the characteristics of the air mass change and so does the weather in the area
Air Masses • Moisture of source • Continental: formed over land (DRY) • Maritime: formed over water (HUMID) • Temperature of source • Polar: formed over polar area (COLD) • Tropical: formed over tropical area (WARM)
Where would the 4 different air masses originate? mT, mP, cP, cT
Fronts • Form when two air masses meet • They are the boundary that separates the two air masses • There are 4 types of fronts…
WHY YOU BE FRONTIN’?! • With your group, fill in your part of the graphic organizer and come up with a way to share it to the class • Skit, rap, poster, etc. • Use your textbook: • Warm Fronts: pg. 565 • Cold Fronts: pg. 566 • Stationary Fronts: pg. 566 • Occluded Fronts: pg. 567
Warm Fronts • Warm air mass meets and rises above cold air mass • Associated with slow and steady rain, followed by hot, humid weather • gentle slope
Cold Fronts • Cold air masses overtake and pushes under warm air mass forms faster • Heavy rains and violent thunderstorms, followed by fair, cool weather • Steeper slope
Stationary Fronts • Front does not move b/c air flows parallel to front line • Gentle to moderate precipitation
Whats the difference between a warm front and a cold front? • Which forms faster, a warm front or a cold front?
Occluded Fronts • Cold fronts move faster than warm fronts they can catch up to and overtake a warm front, wedging the warm air upward • Complex; Heavy rains followed by light precipitation for several days
Exit Ticket __1. What type of front occurs when warm air moves into an area where cooler air was? a. warm front c. stationary front b. occluded front d. cold front __2. When two air masses meet, what is going to occur depending on air temperature? a. cooler air will move on top of warm air b. warm and cool air will flow evenly throughout c. warm air will move on top of cooler air d. medium temperature air will occur __3. During a warm front, what type of weather are you most likely to experience? a. Clear, sunny skies c. Steady, but light precipitation b. High winds d. Thunderstorms
Exit Ticket __4. If a cold front just passed through Charlotte, what type of weather was experienced while the cold front was occurring? a. Clear, sunny skies c. No precipitation but high winds b. Thunderstorms d. Light precipitation for a few days 5. Using the picture below, what type of front is occurring and what type of weather will be experienced in the area? Front: ___________________________________ Weather: _________________________________