Question of the Day

2. Question of the Day Question: What are the 3 ingredients needed to make a cloud? Answer: … … … • Turn In Now: • Cloud Chamber Lab • p. 621 Understanding Concepts 1 – 7, 10, 11

3. Wind

4. a difference in air pressure between 2 places • Moving air  changes in pressure What causes wind?

5. Wind Map

6. Sinking (cold) Air Creates High Pressure Changes in Pressure Rising (warm) Air Creates Low Pressure

7. Air Always Moves from High to Low Pressure Gradient = difference in pressure

8. Moving Air is Called Wind!

9. Global Winds: Winds that blow steadily from specific directions cover long distances Stay the same over long periods of time Affected by the Earth’s rotation

10. Northern Hemisphere  things turn to the right Southern Hemisphere  things turn to the left The Coriolis Effect

11. Coriolis Effect Counter- Clockwise Rotation Clockwise Rotation

12. This is The CORIOLIS Effect

13. This is the CORIOLIS effect

14. The Coriolis Effect • This is true for wind NOT for drains! • IT IS ALSO TRUE FOR OCEAN CIRCULATION CALLED GYRES (more on that next semester).

15. Types of Global Winds • Trade Winds • winds that blow from 300 North or South toward the equator. TRADE WINDS

16. Types of Global Winds • Prevailing Westerlies: • winds that blow from West to East WESTERLIES

17. Types of Global Winds • Polar Easterlies • Cold global winds that blow from East to West POLAR EASTERLIES

18. Types of Global Winds • Jet Stream: • bands of high speed winds that are hundreds of km wide • Move around the poles and subtropics • Bring clouds and storms

19. Local Winds • blow over short distances • caused by unequal heating of Earth’s surface • not affected by Coriolis Effect

20. Types of Local Winds • Sea Breeze: Wind that blows from a lake or oceanto the land

21. Types of Local Winds • Land Breeze: Wind that blows from the land out over a body of water

22. p. 621 Understanding Concepts #1 – 7, 10, 11

23. p. 621 Understanding Concepts #1 – 7, 10, 11 • Around Los Angles, frequent temperature inversions are the result of cool, polluted air being trapped by… a. acid rain c. a thunderstorm b. a layer of warm air d. the ocean

24. p. 621 Understanding Concepts #1 – 7, 10, 11 2. The __________ is the process in which the atmosphere traps warming solar energy near Earth’s surface. a. summer solstice c. greenhouse effect b. Coriolis effect d. water cycle • Almost all the water vapor in the atmosphere is in the … a. exosphere c. strasopause b. ionosphere d. troposphere • The addition of _________ to the atmosphere by the burning of fossil fuels for cars, machinery, and power plants may lead to global warming. a. gasoline c. oxygen b. CFCs d. carbon dioxide

25. p. 621 Understanding Concepts #1 – 7, 10, 11 5. CFC’s, chemicals that are used as refrigerants and propellants in spray can, are partly to blame for the reduction of __________ in the atmosphere. • carbon dioxide • oxygen • ozone d. clouds

26. p. 621 Understanding Concepts #1 – 7, 10, 11 6. Clouds from when water vapor in the air condenses as … a. the air is heated c. snow falls b. the air is cooled d. snow forms • When air temperature drops, the air’s abilities to contain water vapor is … a. slightly higher c. about the same b. much higher d. lower

27. p. 621 Understanding Concepts #1 – 7, 10, 11 10. ___________ are lines on a weather map that connect points of equal pressure. a. isobars b. isotherms c. highs d. lows • When a moving warm air mass encounters a mountain range, it… a. stops moving b. rises and cools c. slows and sinks d. reverses direction