1. Do Now What happens at the dew point?
In which direction is air pressure exerted?
Wind is caused by the movement of air from a ________ pressure to a _________ pressure area
What type of weather can you expect at an area of:
Low pressure?
High pressure?

2. Objective & Agenda
SWBAT describe the weather patterns associated with warm and cold fronts
Knowledge Café
Due Thursday 5/15
Tutoring 230
Do Now
SAT Vocabulary
Weather Tracker
Notes
Guided Practice
Independent Practice
Exit Ticket

3. Obscure (adjective) not discovered or known about; uncertain
EX - his origins and parentage are obscure.
not clearly expressed or easily understood
EX - obscure references to Proust.
not important or well known
EX - an obscure religious sect.
hard to make out or define; vague
EX - I feel an obscure resentment.

4. 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
“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

5. Do Now 1. What happens at the dew point?
Dew point = the temperature at which water vapor will condense
2. In which direction is air pressure exerted?
Up, down, sideways, all ways
3. Wind is caused by the movement of air from a HIGH pressure to a LOW pressure area.
4. What type of weather can you expect at an area of:
Low pressure – clouds & precipitation
High pressure - clear skies

6. Let’s update our Weather Tracker!! Hold on to this for extra credit

7. Guided Notes Expectations
Eyes & Head Up
Pen/pencil in hand
No talking
Raise your hand to speak
No cell phones out “Out of sight, out of mind”
Stay focused towards our objective

8. 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

9. Air Masses Air masses are characterized by where they FORM:

10. Air Masses Moisture of source Continental: forms over land (DRY)
Maritime: forms over water (HUMID)

11. Air Masses Temperature of source Polar: forms in polar area (COLD)
Tropical: forms in tropical area (WARM)
Arctic: forms over the arctic (COLD)
Artic is colder than Polar

12. Types of Air Masses Arctic Air (A) – originates from the Arctic Ocean
Continental Arctic (cA): Produces extremely cold temperatures and very little moisture. It originates over the Arctic Ocean in winter.
Maritime Arctic (mA): From the same source, but LESS Dry (WET) and less cold!

13. Types of Air Masses
Polar Air (P) – originates from both the Pacific and Atlantic Ocean
Continental Polar (cP): Cold and dry air that originates from high latitudes. This type of air brings the cold, dry and clear weather on perfect winter days and the dry and warm weather on summer days!
Maritime Polar (mP): Cool and moist – the air moves over the Atlantic and Pacific Oceans. This type of air is unstable which usually results in showers over the sea and windward coasts (like the West Coast).

14. Types of Air Masses
Tropical Air (T) – originating from the southern Pacific and Atlantic Oceans
Continental Tropical (cT): Hot and very dry – it comes from the arid (dry) and desert regions during the summer.
Maritime Tropical (mT): Mild and damp in winter, very warm and muggy during the summer.

15. Where would the 6 different air masses originate?
mA, mT, mP, cP, cT, cA mP mP cA cP mT cT mT

18. Fronts The boundary that separates two air masses when they meet
There are 4 types of fronts…

19. Warm Fronts
1st : Warm air mass meets and rises above cold air mass 1st Gentle/slower formation 2nd slow and steady rain followed by hot, humid weather

20. Cold Fronts
1st Cold air masses pushes under warm air mass *forms faster than warm front 1st Steeper/quicker formation 2nd Heavy rains and violent thunderstorms, followed by fair, cool weather

21. Animation

22. FAST FACT
40 to 50 percent of body heat can be lost through the head (no hat) as a result of its extensive circulatory network.

23. (mix of cold and warm front weather)
Occluded Fronts
1st Cold front moves faster and passes warm front, wedges warm air upward
2nd Complex; Heavy rains followed by light precipitation for several days
(mix of cold and warm front weather)

24. Like a horse race!! (Which rider represents a cold air mass and which represents a warm air mass?)

25. Stationary Fronts 1st Front does not move
Because air flows parallel to front line
2nd Gentle to moderate precipitation

26. Guided Practice You may choose 1 partner to work with
10 minutes to answer 12 questions
2 students per table, facing forward
Talking quietly with partner
We will be discussing the answers afterwards
You will be expected to answer
If you finish early, collect a foldable sheet to summarize information

27. Guided Response Why does warm air rise at a front?
Why does cold air stay close to the ground?
What type of weather is associated with a cold front?
What type of weather is associated with a warm front?
List two ways cold and warm fronts are similar or related to each other:

28. Guided Practice Why does warm air rise at a front?
Warm air is less dense = rises
2. Why does cold air stay close to the ground?
Cold air is more dense = sinks

29. Guided Response Why does warm air rise at a front?
Why does cold air stay close to the ground?
What type of weather is associated with a cold front?
What type of weather is associated with a warm front?
List two ways cold and warm fronts are similar or related to each other:

30. Guided Practice
3. What type of weather is associated with a cold front? Thunderstorms, heavy rain then clear skies with lower temperatures and lower humidity 4. What type of weather is associated with a warm front? Light rain then clear skies with higher temperatures & high humidity

31. Guided Response Why does warm air rise at a front?
Why does cold air stay close to the ground?
What type of weather is associated with a cold front?
What type of weather is associated with a warm front?
List two ways cold and warm fronts are similar or related to each other:

32. Guided Practice
5. List two ways cold and warms fronts are similar or related to each other:
Associated with Rain
(b) Associated with Clouds

33. Guided Response
6. Which front moves through an area faster? Why? Which front moves through an area slower? Why? 7. If a warm front occurs in the winter, what type of snow storm would it likely bring? 8. If a cold front occurs in the winter, what type of snow storm would it likely bring? 9. Which type of front would likely bring hail and possible tornadoes into an area? How do you know? 10. Describe what happens at a stationary front.

34. 6. Which front moves through an area faster. Why
6. Which front moves through an area faster? Why? Cold because warm air is easy to push (lighter & less dense) 6. Which front moves through an area slower? Why? Warm air cannot move cold air because it is heavy & more dense so eventually the warm air rises above the cold air mass

35. 8. If a warm front occurs in the winter, what type of snowstorm would it likely bring?
Light snow & long duration
9. If a cold front occurs in the winter, what type of snowstorm would it likely bring?
A lot of snow because cold air pushes the warm & moist air up, which causes it to condense & create precipitation

36. Guided Response
6. Which front moves through an area faster? Why? Which front moves through an area slower? Why? 7. If a warm front occurs in the winter, what type of snow storm would it likely bring? 8. If a cold front occurs in the winter, what type of snow storm would it likely bring? 9. Which type of front would likely bring hail and possible tornadoes into an area? How do you know? 10. Describe what happens at a stationary front.

37. 10. Which type of front would likely bring hail and possible tornadoes into an area? How do you know?
Occluded Front
11. Describe what happens at a stationary front.
Air flows parallel to one another & takes longer for the front to move through
12. Explain how an occluded front happens.
Warm air is wedged together by cold air.

38. Northrup’s Knowledge Cafe
Need to do a Appetizer, Entrée, & Dessert
Due Thursday 5/15
Must staple assignment paper on top
Please indicate which assignments you completed on the bottom of the paper
Stay seated, face forward, talk quietly
Head phones are allowed after two minutes of transition.

39. Preparation for End of Class
Clear desk
Get ID Badge on
Put materials back
Knowledge Café is due Thursday 5/15
Tutoring 230!

40. Exit Ticket (4 points total)
Why does warm air rise at a front?
Which type of front would likely bring hail and possible tornadoes into an area?
Which front moves through an area slower? Why?

41. Guided Response
6. Which front moves through an area faster? Why? Which front moves through an area slower? Why? 7. If a warm front occurs in the winter, what type of snow storm would it likely bring? 8. If a cold front occurs in the winter, what type of snow storm would it likely bring? 9. Which type of front would likely bring hail and possible tornadoes into an area? How do you know? 10. Describe what happens at a stationary front.