WARM-UP 11-20-07

1. WARM-UP 11-20-07 • Use the response pads and answer questions 1-4 on p. 39 of your textbook.

2. Chapter 2 Weather Patterns Section 2.1 The atmosphere’s air pressure changes.

3. OBJECTIVES • Recognize how the movement of air molecules causes air pressure. • Describe how air pressure varies. • Explain how differences in air pressure affect the atmosphere.

4. CPS • What drives all of the changes that take place in Earth’s atmosphere? A. air pressure B. solar energy C. rotation

5. Cayman Islands 1000mb 20 degrees C Mt. Everest 330mb -9 degrees C

6. air pressure: force of air molecules pushing on an area greater the force, higher the air pressure Why don’t you get squashed? Pressure is balanced Air exerts pressure.

7. CPS • How does the density of air change with altitude? A. Air is more dense at higher altitudes. B. Air is more dense at lower altitudes. C. Air has the same density at all altitudes.

8. Air pressure is related to altitude and density. • How? weather balloon

9. CPS • So where is air pressure greatest? A. On a mountain top B. In the Grand Canyon C. In Overland Park, KS • Air molecules push A. in all directions B. only from the top C. from the top and bottom

11. CPS • 1. Air pressure A. Is the force exerted by moving air molecules B. Only pushes on objects in one direction C. Is the same as density • 2. Air pressure increases A. As density decreases B. As altitude increases C. As you move lower in the atmosphere

12. Air pressure and tennis balls • If air pressure same at all locations air wouldn’t move much. • Because of differences in air pressure air moves • Air moves from areas of high pressure to low pressure.

13. Measuring air pressure BAROMETER

14. 3. Air moves because air pressure A. Remains constant with altitude B. Varies from place to place C. Is higher in cold air • 4. Which of these tools is used to measure air pressure? A. Thermometer B. Kilometer C. Barometer

15. CPS • 5. How does the density of air change with altitude? A. Air is more dense at higher altitudes. B. Air is more dense at lower altitudes. C. Air has the same density at all altitudes. • 6. Which of these factors does not affect air pressure? A. altitude B. air temperature C. humidity D. unequal heating

16. Warm-Up • Answer the following question. Include a topic sentence, supporting details, and a concluding statement. Imagine that you are riding in a hot air balloon. Describe how the air around you changes as you go up higher in the balloon and as you come down again. Use the following terms in your answer. altitude density air pressure

17. WARM-UP 1-23-09 • Write down your definition for “weather.” (You may only use your BRAIN.) • If you were traveling by plane from Kansas City to Tampa for the Super Bowl (in which the Arizona Cardinals will upset the Pittsburg Steelers), do you think the pilot flies at a straight shot to Tampa? (Aims directly for Tampa) Why or why not?

18. OBJECTIVES • Explain patterns of heating and cooling (uneven heating) which causes air to move. • Describe, in writing how Earth’s rotation affects wind direction using a balloon, which will act as Earth, and a vis-a-vis pen.

19. Section 2.2 The Atmosphere has wind patterns.

20. WIND PATTERNS • Weather- condition of Earth’s atmosphere at a particular time and place. • Wind, moving parallel to the ground is an important part of weather. • Over short distances wind moves from _____ pressure to ______ pressure.

22. Global winds • Travel thousands of kilometers in steady pattern • Last for weeks • Caused by uneven heating between equator and poles • Pages 50-51

23. RECAP • Compare and contrast local winds and global winds?

24. Earth’s rotation affects wind direction. • Coriolis effect- influence of Earth’s rotation on global winds causing them to curve • ACTIVITY: (balloon represents Earth) • Partner 1 spins balloon ____________ • Partner 2 places pen on North Pole and draws line to Tropic of Cancer, while balloon spins. • Partner 2 then spins balloon ___________ • Partner 1 places pen on South Pole and draws line to Tropic of Capricorn while balloon spins.

25. Earth’s rotation affects wind direction. • Coriolis effect- influence of Earth’s rotation on global winds causing them to curve • Northern Hemisphere winds curve to_____ • Southern hemisphere winds curve to _____ http://www.classzone.com/books/earth_science/terc/content/visualizations/es1904/es1904page01.cfm

26. Thinking about the activity and the simulation, answer the following question. ** Does the Coriolis Effect influence global winds or local winds? Explain your answer.

27. WARM-UP 2-2-09WELCOME TO MRS. GENCARELLI • Answer the following questions using complete sentences. • When water is put in a cup with an index card on top, why doesn’t the water come out when the cup is inverted (turned upside down)? • What happens when #1 is redone, but a hole is poked in the bottom of the cup with a piece of masking tape over the hole? • When the tape is taken off the hole why does the water rush out? • What causes air to move?

28. WARM-UP 2-3-09 • BREATHE on the mirror that is at your table. Explain in 2-3 sentences what is happening.

29. http://www.classzone.com/books/earth_science/terc/content/visualizations/es1903/es1903page01.cfmhttp://www.classzone.com/books/earth_science/terc/content/visualizations/es1903/es1903page01.cfm SEA LAND

30. MONSOONS

31. Jet Stream • Flow in upper troposphere from west to east • Greater than 200 km/hr in winter • Lower speeds in summer • Navigate the Jet Stream p. 55

32. WARM-UP 2-4-09 • Come up and look at the model on the front lab table. What does this represent? Compare it to breathing on the mirror yesterday. What is similar in both?