1. Application: Air mass sort79
Air Masses and Fronts 80
Air Masses and Fronts
10/27/14
10/27/14
Application: Air mass sort
Connection: Air mass Map
Starter:
Object
Description
Practice : Notes glue here when done
Exit:
Using the information you learned today, explain how an air mass and a front would affect the weather in an area.

2. 1 Starter 2. Practice-Notes 3. Activity 4. Ws 5. Exit
January 27, 2014 AGENDA Objectives 8.10 B: Students will identify and recognize how global patterns of atmospheric movement influence local weather using weather maps that show high and low pressures and fronts by reading and writing while completing notes and an activity

3. Table of Contents Convection and Ocean Currents
Date Lecture/ Activity/ Lab Page
10/ Unit 5 vocabulary
10/ Quiz/Writing
10/20 Weathering Notes
10/ Weathering Lab
10/ Climate, Wind and Ocean Currents
10/
10/24 Wind and Currents Writing
10/27 Fronts and Air Masses
Convection and Ocean Currents

5. Air Masses and Fronts

6. Air Masses Air masses have different temperatures and humidity levels
When they collide the more dense air mass goes under the less dense air mass
There are 5 types and are classified according to where they form:
If an air mass forms over land (continental) it has low humidity
If an air mass forms over an ocean (maritime) it has high humidity
Air masses are either hot or cold

7. Maritime Tropical (mT)
Forms over ocean near equator
Holds warm, moist air
In summer- hot, humid
In winter-rain, snow

8. Maritime Polar (mP) Forms over the polar regions Holds cold, moist air
During summer- cooler temps.
During winter- heavy snow and cold temperatures

9. Continental Tropical (cP)
Forms over Mexico only in the summer time.
Brings dry, hot air to Southwestern US

10. Continental Polar (cP) & Continental Arctic (cA)
Forms over land in North Canada
Holds cold, dry air
Causes extremely cold temps in the US in winter
Continental Arctic Masses only happen in the winter

11. Fronts
Fronts are the leading edges of air masses with different air temperature and/or humidity.
When a front passes over an area, it is marked by changes in temperature, moisture, wind speed and direction, and precipitation.

12. Cold Front
Occurs when a polar (cold) air mass runs into a tropical (warm) air mass
The warm air is less dense and gets pushed above the cold air mass
Temperatures drop, and there is usually precipitation
Thunderstorms are usually a result of a cold front

13. Warm Front
Occurs at the place where a warm air mass replaces a cold air mass.
The warm air mass is denser and will slowly push the cold air, eventually rising above it.
Results in warmer temperatures.
Usually precipitation.

14. 3. Occluded Front a. Occurs when a cold front overtakes a warm front
b. Has cool temperatures and large amounts of rain and snow

15. a. When a warm air mass meets a cold air mass and no movement occurs
b. Brings drizzly rain
c. Clear, warm weather afterward
4. Stationary Front 56 42
Warm air
Cold Air

16. Application/Connection
AIR Mass Sort
With a partner, match the word with the definition that describes it.

20. Application/Connection: Glue foldable here and turn in questions.
151
Air Masses and Fronts
Air Masses and Fronts
152
1/27/14
1/27/14
Application/Connection:
Glue foldable here and turn in questions.
Connection/Exit:
Relate air temperature to the type of precipitation that will fall.
Starter:
Current Activity: Turn in when finished
Practice : Notes glue here when done