1. Bell Ringer: 1) Please open your IAN to yesterday’s notes on global warming. 2) Review our key tech terms with the half sheet in your blue tubs. 3) Glue it in!

2. Essential Questions: 1) Is Global Warming Real? 2) How Does the Earth Cool off?

3. Final Research: You Decide!  Question : Is Global Warming real? Is it a natural event or man made? Is it natural and people are making it worse?  Bill Nye debate Bill Nye debate  Myth Busters: Global Warming Myth Busters: Global Warming

4. Let’s Review!  Explain research on 2 different points of view for Global Warming. 5 facts each.  Try to answer the following questions:  A. What is it?  B. What is causing it?  C. What will change (ocean levels, animal/plant life)?  D. What might the temperature be in 100 years?  E. What is contributing to it?  F. What are arguments for the ‘natural cycle’ side of it?

5. 15.3 Global Winds and Local Winds Copy into your IAN! Objectives: 1.Explain the relationship between air pressure and wind direction. 2.Describe global wind patterns. 3.Explain the causes of local wind patterns.

6. Why Air Moves  Wind- movement of air is caused by differences in air pressure  Greater pressure difference = faster wind

7. Air Rises at the Equator and Sinks at the Poles  Differences in air pressure are generally caused by unequal heating of the Earth.  Equator  Receives more direct solar energy  Air is warmer and less dense  Warm air rises and creates low pressure area  Warm air flows to poles

8. National geographic video clip  http://video.nationalgeographic.com/vid eo/player/science/earth-sci/weather-101- sci.html?referrer=epals http://video.nationalgeographic.com/vid eo/player/science/earth-sci/weather-101- sci.html?referrer=epals

9. Air Rises at the Equator and Air Sinks at the Poles, cont’d  Poles  Air is cooler and more dense  Cold air sinks  Creates high pressure area  Cold air flows toward equator  AIR Moves from H to L !!!

10. Pressure Belts Are Found Every 30 Degrees  Pressure belts- bands of high pressure and low pressure found every 30 latitude.  Sinking air causes areas of high pressure because sinking air presses down on the air beneath it.

11. PressureBelts

12. The Coriolis Effect  Apparent curving of the path of winds and ocean currents due to the Earth’s rotation.  North- winds going north curve east  South- winds going south curve west  Connection??

13. Global Winds  Patterns of air circulation  Named from direction from which they blow  Major global wind systems  Polar easterlies  Prevailing Westerlies  Trade winds

14. Global winds

16. Polar Easterlies  Poles to 60 latitude in both hemispheres  Cold, dense air moves from poles to 60  Effect?  Can bring cold air to US making snow and freezing weather

17. Prevailing Westerlies  30 and 60 latitude in both hemispheres  Flow from west to east  Effect?  Can bring moist air to US making rain and snow

18. Trade Winds  30 latitude almost to equator in both hemispheres  Due to Coriolis-curve to west in N. Hemisphere and east in S. Hemisphere  Effect?  Traders used winds to move from Europe to Americas.

19. Doldrums: located where the trade winds of the two hemispheres meet at the equator means “dull” or “sluggish” an area of Low Pressure

20. The Horse Latitudes  30 north and south latitude  Very weak winds

21. Jet Stream: Atmospheric Conveyor Belts  Narrow belts of high speed winds  Blow in the upper troposphere and lower stratosphere  Effect?  Can affect movement of storms and airplane flights  Cool Fact! Did you Know?

22. Local Winds  Move short distances  Blow from any direction  Caused by temperature differences  Sea breeze moves from sea to land  Land breeze moves from land to sea

23. In Summary: In your IAN, please answer the following questions:  What is the big difference between global and local winds?  Name& Describe 3 examples of global winds.  Would there be winds if the Earth’s surface were the same temperature everywhere? Why?.

24. visual organizervisual organizer: Create one using today’s techterms.  Brainpop Wind Brainpop Wind

26. How does wind blow?  Wind will flow from high to low!!! What effect does elevation have on winds??

27. Mountain Breeze vs,. Valley Breeze

30. Wrapping it up:  What role does the Sun play?  Sun heats the land and water, changing temperatures  Different heating causes density differences, causing wind!  UNEQUAL HEATING CAUSES THE WIND!  Local Winds eactivity Local Winds eactivity  Brainpop Wind Brainpop Wind

31. Sea Breeze (Draw your own picture)

33. Land Breeze (draw your own picture here)

35. Greenhouse vs. Global Warming One More Time!  Global Warming Brainpop Global Warming Brainpop