Download Cold Fronts

Science Starter
1. Which type of air is more dense, warm air or cold
air?
2. Complete the boxes below by drawing particles
for the different air temperatures using your
answer from #1
Cold Air
Warm Air
3. If you are fighting on the frontline in a war, what
does that mean?
Agenda
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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=msSVQ90
3T8k
• 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
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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)
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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…
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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
1) Whats the difference between a warm front
and a cold front?
2) 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: _________________________________