1. How would the sun’s energy affect the wind?
3/25/ :16 AM
How would the sun’s energy affect the wind?
SPI
Recognize the connection between the sun’s energy and the wind.
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2. Key Vocabulary Coriolis El Niño Effect land breeze jet La Niña stream
sea
breeze
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

3. Let's Get Started… Coriolis Effect Jet Stream Land Breeze Sea Breeze
Before we begin, let’s make the 4-fold windowpane.
Coriolis Effect
Jet Stream
Land Breeze
Sea Breeze

4. Activator : Identifying Misconceptions.
Look at the fan…
What causes the wind to move?
Electricity is running a motor.
It causes the blade to move.
As the blades turn, they move the air.
On your notecard,
Hypothesize how your think the air outside moves.
Is there a “fan” that makes the wind blow?
Share your thoughts with a neighbor or table.

5. Let's begin reading p. 309 Focus on the following:
- What causes some areas to be warmer than others?
- What part of Earth receives the most sunlight throughout the year?

6. Teaching… Forming Wind p. 309
Uneven heating of Earth’s surface by the Sun causes some areas to be warmer than others.
Remember:
Hotter air is less dense, so…
heated air from the equator “rises”
or moves toward the poles.
Cooler air is more dense, so…
the cooler air from the poles “falls”
or moves toward the equator.
These are the convection currents
that encircle the globe.

7. Focus on the following: - What is the Coriolis Effect?
Continue reading p. 310
Focus on the following:
- What is the Coriolis Effect?

8. Check the merry-go-round for a video demonstration.
Teaching…
p. 310
What Would Happen If…
You and a friend were sitting on opposite ends of a merry-go-round and you threw a ball to your friend.
Would the ball get directly to your fried?
With a partner, discuss why you think it would or would not reach your friend.
Check the merry-go-round for a video demonstration.

9. The Coriolis Effect..
p. 310
The rotation of Earth causes moving air and water to APPEAR to turn to the right north of the equator and to the left south of the equator.
It is all about
PERSPECTIVE!!!!!
Confused??? Try this…
Stand up facing the board. Point to something on your right.
Turn around 180˚
Point to the same spot. Is your original point still on your right?

10. The Coriolis Effect
p. 310
If the Earth did not rotate at all, the winds would simply move straight up and down between the equator and the poles.

11. Drop It – Think It – Ink It
On your note card, write and complete the following sentences.
The uneven heating of the Earth is due to…
The Coriolis Effect is…
It is caused by…
Share with your
partner or table.

12. Yes…more reading! p. 312 Focus on the following: - Surface Winds
Prevailing Westerlies
Trade Winds
- Winds in the Upper Troposphere
Jet Streams

13. Surface Winds
p. 312
Winds blowing from 30˚N and 30˚S towards the equator are called the TRADE WINDS.
Why were they called the trade winds?
Early sailors used these
dependable currents to
establish trade routes.

14. Surface Winds
p. 312
Winds blowing between 30˚ and 60˚ latitude travel opposite of the trade winds. These are called the PREVAILING WESTERLIES.
Why are the prevailing westerlies important?
They are responsible for
much of the movement
of weather in
N. America.

15. Surface Winds
p. 312
Winds blowing near the North and South poles are called the POLAR EASTERLIES.
Guess what…THE WATER IS COLD HERE! (seriously)
The cold waters here travel
back towards the
equator.

16. Winds in the Upper Troposphere
What phenomena occur in the troposphere only???
THE WEATHER!!!!!!!!!!!!!!!
The JET STREAMS are narrow bands of strong winds that blow near the top of the troposphere.
North of jet streams
you find cold, dry air.
South of jet streams
you find warmer,
more moist air.

17. The JET STREAMS
p. 312
Pilots flying east will try to fly in the jet streams due to their increased speed, causing pilots to make quicker trips and using less fuel.

18. OTHER JET STREAMS
p. 312

19. THUMBS UP – THUMBS DOWN
Read each statement, then decide if you agree (thumbs up) or disagree (thumbs down).
The Earth rotates from west to east.
The trade winds occur from 60˚N and 60˚S towards the equator, and are named because they were originally used by sailor who used these currents to set up trade routes.
To the south of the polar jet stream you would find colder, drier weather.
Pilots who are flying east will try to use the jet streams to save more fuel and time.

20. Finally, read p. 312-313 Focus on the following:
- The differences between sea breezes and land breezes.

21. SEA and LAND BREEZES WHAT’S THE DIFFERENCE? p. 313
Convection currents over areas where the land meets the sea can cause wind.
WHAT’S THE DIFFERENCE?
SEA BREEZE
LAND BREEZE

22. SEA BREEZE p. 313 What makes a sea breeze a sea breeze???
Occurs during the daytime.
(notice the sun shining!)
Solar radiation warms the land
faster that the water.
Air over the land is heated and
rises. (convection current starts!)
Cooler, denser air has higher
pressure and falls toward the
ocean, pushing the cooler air off
the sea and towards the land.

23. LAND BREEZE p. 313 What makes a LAND breeze a LAND breeze???
Occurs at night.
(notice the moon!)
At night, the air over land cools
faster than the ocean.
Air over the warmer water begins
to rise.
Cooler, denser air over the land
has higher pressure and falls
toward the land, pushing the
cooler air off the land and towards
the sea.

24. Text Me the 4-1-1
On the back of your note card, create a text message to your BFF describing how a land breeze forms or how a sea breeze forms.
Remember…
details…
details!
Help!
I need the 411 on land breezes and sea breezes!
Sho me wat u got!