INTRO

1. Objective 02/14/2013 Describe global wind patterns. INTRO What causes the wind to blow? Does it always blow in the same direction?

2. Wind

3. Wind

4. Wind • Why does air move? • Differences in air pressure create wind • Air moves from HIGH to LOW pressure • Due to uneven heating of Earth Ch. 15, Sec. 3, QC 1

5. Wind • Where are Pressure Belts? • Bands of high and low pressure • On latitudes at every 30° on the earth • Let’s add to our diagram! Ch. 15, Sec. 3, QC 2

6. Wind • Coriolis Effect • The curving of wind due to the Earth’s rotation • Let’s add to our diagram! Ch. 15, Sec. 3, QC 3

7. Coriolis Force

8. Wind • Global Winds • Polar Easterlies • Westerlies • Trade Winds • The Doldrums • Horse Latitudes • Let’s add to our diagram!

9. Wind • Jet stream • Narrow belt of strong winds that blow in upper troposphere • Can reach max. speed of 300mph • Affects movement of storms and even planes!

10. Global Atmospheric Circulation Model

11. Winds • Sea Breeze • Land Breeze • During the day, land warms faster than water, so the warm air rises • Cool air comes in from the ocean • Water warms slower than land, so by nightfall, warm air rises above the ocean • Cool air then comes in from the land Ch. 15, Sec. 3, QC 5

12. Wind • Mountain and Valley Breezes • Warm air moves UP the mtn. during day • Cold air moves DOWN the mtn. during night

13. Wind • Summary • Why does air move? • Does all air move the same? Give an example.

14. Objective 02/14/2013 Describe global wind patterns. Outro Why is it always a good time to fly a kite at the beach?