1. Complete the quiz that is on your desk. Answer all questions to the best of your ability. You cannot use your notebook. You may write on this sheet. When finished, turn your paper face down on your desk and wait patiently. You will have 15 minutes!

2. Complete the quiz that is on your desk. Answer all questions to the best of your ability. You cannot use your notebook. You may write on this sheet. When finished, turn your paper face down on your desk and wait patiently. You will have 15 minutes! 15:00

3. Complete the quiz that is on your desk. Answer all questions to the best of your ability. You cannot use your notebook. You may write on this sheet. When finished, turn your paper face down on your desk and wait patiently. You will have 15 minutes! 10:00

4. Complete the quiz that is on your desk. Answer all questions to the best of your ability. You cannot use your notebook. You may write on this sheet. When finished, turn your paper face down on your desk and wait patiently. You will have 15 minutes! 5:00

5. Complete the quiz that is on your desk. Answer all questions to the best of your ability. You cannot use your notebook. You may write on this sheet. When finished, turn your paper face down on your desk and wait patiently. You will have 15 minutes! 1:00

6. Complete the quiz that is on your desk. Answer all questions to the best of your ability. You cannot use your notebook. You may write on this sheet. When finished, turn your paper face down on your desk and wait patiently. You will have 15 minutes! 0:30

7. Complete the quiz that is on your desk. Answer all questions to the best of your ability. You cannot use your notebook. You may write on this sheet. When finished, turn your paper face down on your desk and wait patiently. You will have 15 minutes! 0:15

8. Complete the quiz that is on your desk. Answer all questions to the best of your ability. You cannot use your notebook. You may write on this sheet. When finished, turn your paper face down on your desk and wait patiently. You will have 15 minutes! 0:10

9. Complete the quiz that is on your desk. Answer all questions to the best of your ability. You cannot use your notebook. You may write on this sheet. When finished, turn your paper face down on your desk and wait patiently. You will have 15 minutes! 0:05

10. Complete the quiz that is on your desk. Answer all questions to the best of your ability. You cannot use your notebook. You may write on this sheet. When finished, turn your paper face down on your desk and wait patiently. You will have 15 minutes! Time’s Up!

11. Complete Vocabulary Chapter 19 There are 15 words You have 25 minutes to complete and turn in

12. 1.What is air pressure? 2.What is the most important gas in the atmosphere when it comes to understanding atmospheric processes? 3.Which natural phenomenon occurs as a result of Earth rotating on its axis? a.Movement of tectonic plates b.Deep ocean currents c.Seasonal changes d.Day and night 4.How does the text of the Earth’s axis affect the seasons? a.By changing the amount of direct solar energy reaching the surface of Earth b.By influencing the rate of chemical reactions occurring in the atmosphere c.By deflecting the harmful rays of radiation emitted by the sun d.By changing the speed of rotation of Earth

13. Today, you will be able to: Define air mass. Explain how air masses are classified. Explain the characteristic features of each air mass class. Explain the influence of continental polar and maritime tropical air masses on the majority of North America.

14. 282. Air pressure 283. Barometer 284. Pressure gradient 285. Jet stream 286. Isobar

15.  Air pressure is the pressure exerted by the weight of air.  Air pressure is exerted in all directions— down, up, and sideways. The air pressure pushing down on an object exactly balances the air pressure pushing up on the object.

16. http://w3.shorecrest.org/~Lisa_Peck/Physics/syllabus/phases/gases/gaswp05/edie/diagram%2022%20copy.jpg

17.  A barometer is a device used for measuring air pressure.  When air pressure increases, the mercury in the tube rises. When air pressure decreases, so does the height of the mercury column.

19.  Wind is the result of horizontal differences in air pressure. Air flows from areas of higher pressure to areas of lower pressure.  The unequal heating of Earth’s surface generates pressure differences. Solar radiation is the ultimate energy source for most wind.  Three factors combine to control wind: pressure differences, the Coriolis effect, and friction.

20.  Pressure Differences A pressure gradient is the amount of pressure change occurring over a given distance. Isobars- line on a map that connect places of equal air pressure Closely spaced isobars indicate a steep pressure gradient and high winds. Widely spaced isobars indicate a weak pressure gradient and light winds.

22.  Coriolis Effect The Coriolis effect describes how Earth’s rotation affects moving objects. In the Northern Hemisphere, all free-moving objects or fluids, including the wind, are deflected to the right of their path of motion. In the Southern Hemisphere, they are deflected to the left.

24.  Friction Friction acts to slow air movement, which changes wind direction. Jet streams are fast-moving rivers of air that travel between 120 and 240 kilometers per hour in a west-to-east direction.

26. http://www.pzweb.harvard.edu/ucp/images/density_s2_lessonplan7_balance_balloon2.jpg

27. A B C D E Identify wind direction and speed for A-E.

29. 1.Why don’t objects such as a table collapse under the weight of the air above them? 2.Suppose the height of a column in a mercury barometer is decreasing. What is happening? 3.What is the ultimate energy source for most wind? 4.How does the Coriolis effect influence motion of free-moving objects?