exit: starter: 10/27/14 79 80 air masses and fronts 10/27/14 practice : notes glue here when done...
TRANSCRIPT
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Exit:
Starter:
10/27/14
79 80 Air Masses and Fronts
10/27/14
Practice : Notes glue here when done
Application: Air mass sort
Connection: Air mass Map
Air Masses and Fronts
Object Description
Using the information you learned today, explain how an air mass and a front would affect the weather in an area.
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January 27, 2014AGENDA
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
1 Starter2. Practice-Notes3. Activity4. Ws5. Exit
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Date Lecture/ Activity/ Lab Page10/16 Unit 5 vocabulary 65-6610/17 Quiz/Writing 67-6810/20 Weathering Notes 69-7010/21 Weathering Lab 71-7210/22 Climate, Wind and Ocean Currents 73-7410/23 74-7610/24 Wind and Currents Writing 77-7810/27 Fronts and Air Masses 79-80
Table of Contents
Convection and Ocean Currents
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Air Masses and Fronts
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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
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Forms over ocean near equator
Holds warm, moist air
In summer- hot, humid
In winter-rain, snow
Maritime Tropical (mT)
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Maritime Polar (mP)
Forms over the polar regions
Holds cold, moist air
During summer- cooler temps.
During winter- heavy snow and cold temperatures
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Continental Tropical (cP)
Forms over Mexico only in the summer time.
Brings dry, hot air to Southwestern US
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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
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FrontsFronts 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.
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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
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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.
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3. Occluded Front
a. Occurs when a cold front overtakes a warm front
b. Has cool temperatures and large amounts of rain and snow
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4. Stationary Front
a. When a warm air mass meets a cold air mass and no movement occurs
b. Brings drizzly rain c. Clear, warm
weather afterward
Cold Air
Warm air
5642
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Application/Connection
AIR Mass Sort
With a partner, match the word with the definition that describes it.
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Starter:
Current Activity: Turn in when finished
1/27/14
151 152 Air Masses and Fronts
1/27/14
Practice : Notes glue here when done
Application/Connection:
Glue foldable here and turn in questions.
Connection/Exit:Relate air temperature to the type of precipitation that will fall.
Air Masses and Fronts