1. Do Now – In Binders Describe how wind is created. What is the relationship between density and pressure? What happens to air pressure as I hike up a mountain? What instrument measures air pressure?

2. What roles do composition, structure, and properties play in our atmosphere?

3. Coriolis Effect Because the Earth rotates, and consists of a mixture of land and sea, the Coriolis Effect exists The Coriolis Effect is the movement of particles (such as air) to the right in the Northern Hemisphere How about the South? They move to the left

4. Coriolis Effect

5. Global Winds Global wind patterns are caused by: Coriolis Effect The land and sea makeup of Earth

6. Warm Moist Air Rises

7. Cool Dry Air Sinks

8. Warm Moist Air Rises Cool Dry Air Sinks Cold Moist Air Rises

9. Warm Moist Air Rises Cool Dry Air Sinks Cold Moist Air Rises Very Cold Air Sinks

10. Warm Moist Air Rises Cool Dry Air Sinks Cold Moist Air Rises Very Cold Air Sinks H L H H H L L

11. H L H H H L L Wind Moves from HIGH to LOW

12. Objects are deflected to the RIGHT in the Northern Hemisphere

14. Remember! Wind gets its name from the direction it is blowing FROM!

15. Northern Wind Patterns Polar Easterlies 90 – 60 latitude from the east Prevailing Westerlies 60 – 30 latitude from the west Trade winds 30 – 0 latitude from the East

16. Latitude Nicknames Horse Latitudes 30 latitude Named because the boats stalled and the horses had to go! Doldrums / Intertropical Convergence Zone (ITCZ) Equator Trade winds converge from north and south Named because boats also got stranded here

18. Jet Streams Jet Streams form at latitudes where wind systems come together High speed westerly winds form high above the surface