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CRCT Question

CRCT Question. The air pressure acting upon the roof of your house comes from the air within a few feet of your roof. is greater on top of the roof than below it . comes from every direction around your roof. is greater underneath your roof than on top of it. Corny Joke of the Day.

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CRCT Question

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  1. CRCT Question The air pressure acting upon the roof of your house • comes from the air within a few feet of your roof. • is greater on top of the roof than below it . • comes from every direction around your roof. • is greater underneath your roof than on top of it.

  2. Corny Joke of the Day What makes music on your head? A head Band

  3. Week at a Glance Monday: No School Tuesday: Test Wednesday: Workday and preview Weather HW: Make sure project is ready to go! Thursday: Cloud Notes, Project due AT THE END OF THE DAY HW: None

  4. Ocean Projects Overall, great job!!!! Very high scores  Circled score is your SUMMATIVE average for the project!

  5. Quiz Answers 10 points each Great study tool for test!

  6. Review Time

  7. Part 1. Wind Classwork Answers

  8. http://www.coolweather.co.uk/ • Land heats up faster than water. • Warm air over land rises. • Air over water moves to shore. • Would occur during the day. • Named a SEA breeze because it comes from the sea.

  9. http://www.coolweather.co.uk/ • Land cools off faster than water. • Warm air over water rises. • Cool air from land takes its place. • Would occur at night. • Called a LAND breeze because the wind is coming from the land.

  10. Closer Look at Local Wind When Air WARMS up • When air heats up, it loses mass and becomes less dense. • The air becomes more spread out • Because of this, warm air will rise When Air COOLS down • When air cools down, it gains mass and becomes more dense • The air will sink

  11. Animated Version http://www.classzone.com/books/earth_science/terc/content/visualizations/es1903/es1903page01.cfm

  12. Poles to 60˚ Moist air United States 30˚ to 60˚ Cold air More dense=sink Early Sailors 30˚ to equator

  13. Global or Local Wind ????? Air over land is cooler and forms an area of high pressure. The cool air moves toward the ocean. Polar Easterlies Generally moves over short distances Jet stream Caused by unequal heating over a large area Can blow from any direction Land breeze Is effected by the Coriolis Effect Caused by unequal heating within a small area Valley breeze

  14. The Doldrums • Blows from a specific direction from day to day • Sea breeze • Horse latitude • Effected by local geographic features • Westerlies • Caused because the angle of the sun giving the equator more direct sunlight • Mountain breeze • Trade winds • During the day, air over the ocean is cooler and forms an area of high pressure. The cool air flows to the land

  15. Part 2. Atmosphere flow chart Helpful hint: Atmosphere Properties Layers Heat transfer

  16. Part 3. Atmosphere Study Guide

  17. 1. What are the two most abundant elements in the atmosphere (percentage)? 1. Nitrogen – 78% 2. Oxygen – 21%

  18. 2. What is water vapor? Water that is in a gas form • source of water: vapor: evaporationfrom Earth’s surface This satellite image shows the relative amounts of water vapor: Dark – low water, white – high water vapor

  19. 3. What is air pressure and why does it occur? • Air has pressure because it has mass • Air pressure is the measure of the amount of force the air has

  20. 4. List the layers of the atmosphere from Earth’s surface to space. Troposphere – Stratosphere – Mesosphere - Thermosphere

  21. 5. What are global winds and give three examples? • Blow from a specific direction year round. • Cover a large area • Curve due to the Coriolis Effect • Caused by the unequal heating of the earth’s surface • the equator gets more direct sunlight causing the air to rise at the equator and sink at the poles. Examples – trade winds, jet stream, westerlies, and easterlies

  22. 6. What is the greenhouse effect? • The warming of the surface and lower atmosphere of Earth • Occurs when water vapor, carbon dioxide, and other gases absorb thermal energy from the sun and do not allow the heat to escape back into space. (Like a greenhouse) • There are Increasing levels of carbon dioxide due to the burning of fossil fuels

  23. 7. Where does air pollution come from? The burning of fossil fuels Causes: Smog and Acid rain

  24. 8. What are local winds and give two examples? • Local winds are wind that blow over short distances • Come from any direction • Examples – sea and land breezes

  25. 9. What is the Coriolis effect? • The apparent curving of the path of a moving object from an otherwise straight path due to the Earth’s rotation. • Northern Hemisphere: clockwise • Southern Hemisphere: counter-clockwise

  26. 10. What causes wind? Difference in air pressure due to the unequal heating of the Earth’s surface

  27. 11. Explain the difference between land and sea breezes.

  28. 12. What is the formula for density? Density = mass/volume

  29. 13. What is the difference between a barometer and an anemometer? • Barometer measures air pressure • Anemometer measure wind speed

  30. 14. Define radiation, conduction, and convection. Give two examples of each. • Radiation- Doesn’t need a substance. Transfer of energy through electromagnetic waves (ex. – campfire, sun’s radiant energy) • Convection – transfer of energy through a fluid (gas or liquid) (ex. – oven, boiling water in a pot) • Conduction – transfer of energy through a material/solid (iron, stove)

  31. 15. How are the layers of the atmosphere classified? By changes in temperature

  32. 16. What is the difference between volume and mass? • Volume is the amount of space something occupies • Mass amount of matter in an object

  33. 17. Explain the difference between warm and cold air and their density. • Warm air is less dense than cold air • Warm air will create low pressure area and rise • Cold air will create high pressure areas and will replace warm air

  34. 18. How does pressure effect density? Greater pressure =higher density=sink Lower Pressure=lower desnity=rise

  35. 19. What happens to air pressure as you increase with altitude? It decreases The most pressure is at the surface!

  36. 20. What is the difference between local and global winds? • Both are caused by unequal heating of Earth’s surface.

  37. Local wind blows in any direction over short distances and are caused by unequal heating in a small area. Global wind blow over long distances in predictable patterns and are effected by the Coriolis Effect. They are caused because the equator gets more direct sunlight and the air rises at the equator and sinks at the poles

  38. Part 4: Sink or Swim

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