1. WARM-UP 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
3. What type of air would sink and why?
4. What type of air would rise and why?
Cold Air
Warm Air

2. Big Goal We will ACT, THINK, and WORK on a college level
We will be able to independently score 85% or Higher on all assessments

3. Objective
Explain how the interactions of air masses form frontal boundaries.

4. Agenda Warm Up Fronts Notes and clips Whiteboard Challenge
Independent Practice
Exit Ticket

5. Quote of the Day
“The difference between a successful person and others is not a lack of strength, not a lack of knowledge, but a lack of will.” ~Vincent T. Lombardi

6. 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

7. Air Masses Moisture of source Temperature 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)

8. Where would the 4 different air masses originate?
mT, mP, cP, cT

11. Fronts Form when two air masses meet
They are the boundary that separates the two air masses
There are 4 types of fronts…

12. 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

13. 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

14. http://www. teachersdomain. org/resource/mck05. sci. ess. watcyc

15. Stationary Fronts
Front does not move because air flows parallel to front line, instead of into each other
Gentle to moderate precipitation
Cloudy grey skies that could last for days

16. What do this look like?

17. Lightning Quick Review
What is the difference between a warm front and a cold front?
2) Which forms faster, a warm front or a cold front?

19. Which fronts are shown?

21. 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

22. Whiteboard Challenge Rules: You will be working in a small group
Every person in your group must participate in answering the question
You can only work with the people in your group!
First group done with the correct answer will get the point
In order to get the point you have to have the correct answer fully written out on your board AND explain how you got your answer to the rest of the class!
Group with the most points gets a prize!!!!
In order to get the point you have to have the correct answer AND explain how you got your answer to the rest of the class!

23. Draw the symbol for a WARM FRONT#1
Draw the symbol for a WARM FRONT

24. Which type of front brings heavy rains and violent thunderstorms?#2
Which type of front brings heavy rains and violent thunderstorms?
Cold Front

25. Which air mass has a more gentle slope?
# 3
Which air mass has a more gentle slope?
Warm Front

26. What is the symbol for a STATIONARY front?
# 4
What is the symbol for a STATIONARY front?

27. Why does warm air rise at a front?
# 5
Why does warm air rise at a front?
Because it is less dense and less dense air will rise

28. Why does cold air stay close to the ground?
# 6
Why does cold air stay close to the ground?
Cold air is more dense and will sink closer to the ground

29. What is the symbol for an OCCLUDED front?
# 7
What is the symbol for an OCCLUDED front?

30. Describe the weather that follows a warm front.
# 8
Describe the weather that follows a warm front.
Hot, humid, warm weather follows a warm front

31. What weather follows a cold front?
# 9
What weather follows a cold front?
Fair, mild, cool weather follows a cold front

32. # 10
Which front does not move because air flows parallel to front line, instead of into each other?
Stationary Front

33. # 11
Draw AND Label the symbol for EACH FRONT: Warm: Cold: Stationary: Occluded:

34. # 12
Compare and contrast a COLD front and a WARM front. You must have at least 2 points for each!
Gentle Slope
Steep Slope
Slow Steady Rain
Heavy rain and violent
thunderstorms
Warm, humid Air follows
Fair, colder air follows

35. Independent Practice
On the back of your notes, quietly complete your worksheet
If you have questions:
Use your notes
Quietly ask a neighbor
Ask me!
When you are done, go to the front board to get the answer key and check your answers at your seat. When you are done, return the key to the board.

36. Exit Ticket
Silently and Independently complete your exit ticket. Do not use your notes.