aim: how are winds created? do now: in your notebooks answer the following questions. 1)near which...
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![Page 1: Aim: How are winds created? Do Now: In your notebooks answer the following questions. 1)Near which letter are the strongest winds located? 2)What are the](https://reader036.vdocuments.site/reader036/viewer/2022083009/5697bf7d1a28abf838c846c9/html5/thumbnails/1.jpg)
Aim: How are winds created?
Do Now: In your notebooks answer the following questions.
1)Near which letter are the strongest winds located?
2)What are the lines on this map called?
A
B
C
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I. Wind Wind: is the movement of air from high
pressure to low pressure.
H L
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- Wind direction is named based on where wind comes from.
W E
N
S
Wind is blowing from the west
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-Wind direction is measured using a wind vane -Wind speed is measured using an anemometer.
-If wind blows from one direction mostly, it is called a prevailing wind.
* In the U.S., the westerlies constantly move weather west to east.
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II. Pressure Systems- Differences in pressure creates wind.
1. High Pressure System (anticyclone)
Air Temperature: Moisture content:Vertical Movement:Weather conditions:Rotation:
A large blue H indicates the center of high pressure
coolerdry air
sinks at centerHappy weather (dry/sunny)
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a large red L marks the center of low pressure
2. Low Pressure System (Cyclone)
Air Temperature: Moisture content:Vertical Movement:Weather conditions:Rotation:
What type of pressure system was most likely in RVC yesterday?
How about today?
warmermoist air
rises at centerLousy weather (wet/cloudy)
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High Pressure: Rotates Clockwise andOutward from the
center.
Low Pressure: Rotates
Counterclockwise andinward to the center.
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- Curves the path of air and ocean currents across the Earth.
- Caused by the rotation of the Earth
Northern Hemisphere = curved to the right
Southern Hemisphere = curved to the left
III. The Coriolis Effect
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Cyclones and anticyclones move in the opposite direction in the Southern Hemisphere.
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IV. Weather Forecasting• Weather reports emphasize the locations
and possible paths of cyclones and anticyclones (High and Low pressure).
* Low-pressure centers can produce bad weather in any season.
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Closure:• In your notes, list the characteristics
for a low pressure system and a high pressure system.
H
L
• High Pressure• Heavy Air (Sinking)
• Happy Weather• (clear skies)• Clockwise
• Out• Low Pressure
• Light Air (Rising)• Lousy Weather
• (clouds & precip.)• Counterclockwise
• In