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OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
OLM Science6_15
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OLM Science6_15
OLM Science6_15
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OLM Science6_15

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Sixth Grade, Chapter 15

Sixth Grade, Chapter 15

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  • 1. Chapter 15 The Atmosphere Characteristics of the Atmosphere Section 1
  • 2. Composition of the Atmosphere <ul><li>Nitrogen is the abundant gas in the atmosphere </li></ul>
  • 3. Composition of the Atmosphere <ul><li>Oxygen is the second most common gas in the atmosphere </li></ul>
  • 4. Composition of the Atmosphere <ul><li>1 percent of the atmosphere is made up of argon, carbon dioxide, water vapor and other gases </li></ul>
  • 5. Air Pressure <ul><li>The measure of the force with which the air molecules push on the surface </li></ul>
  • 6. Altitude <ul><li>The height of an object above the Earth’s surface </li></ul>
  • 7. Layers of the Atmosphere
  • 8. Troposphere <ul><li>Lies next to the Earth’s surface; the lowest layer of the atmosphere </li></ul>                                                         
  • 9. Stratosphere <ul><li>The atmosphere layer above the Troposphere </li></ul>
  • 10. Ozone <ul><li>Molecule that is made of three oxygen atoms </li></ul>
  • 11. Mesosphere <ul><li>Above the stratosphere – Coldest layer of the atmosphere </li></ul>
  • 12. Thermosphere <ul><li>Uppermost atmosphere </li></ul>
  • 13. Layers of the Atmosphere
  • 14. What are the 2 main gasses in the Earth’s atmosphere? <ul><li>Nitrogen &amp; Oxygen </li></ul>What is atmospheric Pressure? The force exerted by molecules on a surface
  • 15. Name the layers of the atmosphere, starting with the one closest to the Earth? <ul><li>Troposphere </li></ul><ul><li>Stratosphere </li></ul><ul><li>Mesosphere </li></ul><ul><li>Thermosphere </li></ul>
  • 16. Chapter 15 The Atmosphere Heating of the atmosphere Section 2
  • 17. Radiation <ul><li>Energy that is transferred as waves </li></ul>
  • 18. Conduction <ul><li>The transfer of heat from one material to another by direct physical contact </li></ul>
  • 19. Convection <ul><li>The transfer of heat by the circulation or movement of liquid or gas </li></ul>
  • 20. Greenhouse Effect <ul><li>The Earth’s heating process, in which the gases in the atmosphere absorb radiation and change that energy into heat. </li></ul>
  • 21. Global Warming <ul><li>A rise in the average global temperatures </li></ul>
  • 22. What is Radiation? <ul><li>Energy transferred as waves </li></ul>A metal spoon left in a bowl of hot soup feels hot. Which process is mainly responsible for heating the spoon? Conduction
  • 23. What is convection current? <ul><li>The continental, circular movement of warm &amp; cool particles in liquid &amp; gas </li></ul>
  • 24. Chapter 15 The Atmosphere Atmospheric pressure and winds Section 3
  • 25. Wind <ul><li>Moving Air </li></ul>
  • 26. Surface Winds <ul><li>Blow from high - pressure areas to equatorial low - pressure areas </li></ul>
  • 27. Pressure Belts <ul><li>Uneven heating of the Earth produces Pressure Belts These belts occur about every 30 degrees of latitude </li></ul>
  • 28. Coriolis Effect <ul><li>The curving of moving objects, such as wind, by the Earth’s rotation </li></ul>
  • 29. Trade Winds <ul><li>Winds that blow from 30 degrees latitude to the Equator </li></ul>
  • 30. Westerlies <ul><li>Wind belts found in both the Northern and Southern Hemispheres between 30 degrees &amp; 60 degrees </li></ul>
  • 31. Polar Easterlies <ul><li>Wind belts that extend from the poles to 60 degrees latitude in both hemispheres </li></ul>
  • 32. Types of Winds
  • 33. Jet Streams <ul><li>Narrow belts of high speed winds that blow in the upper troposphere and lower stratosphere </li></ul>
  • 34. Sea &amp; Land Breezes
  • 35. What is wind? <ul><li>Air that flows between air masses </li></ul><ul><li>of different temperatures </li></ul>Describe the general movement of wind over the Earth. Winds generally move from the poles to the equator
  • 36. What is the Coriolis Effect? <ul><li>The deflection of moving objects due to Earth’s rotation. </li></ul>What are the two types of breezes that result from local topography? Mountain &amp; Valley Breezes
  • 37. Chapter 15 The Atmosphere The Air We Breathe Section 4
  • 38. Primary pollutants <ul><li>Pollutants that are put directly into the air by human &amp; natural activity </li></ul>
  • 39. Secondary Pollutants <ul><li>Pollutants that form from chemical reactions that occur when primary pollutants come into contact with other primary pollutants or with naturally occurring substances </li></ul>
  • 40. Secondary Pollutants
  • 41. Industrial Air Pollution <ul><li>Industrial Plants &amp; Electric Power Plants that burn fossil fuels to get their energy </li></ul>
  • 42. Indoor Air Pollution <ul><li>Household cleaners, air fresheners &amp; smoke from cooking </li></ul>
  • 43. Acid Precipitation <ul><li>Precipitation that contains acids due to air pollution </li></ul>
  • 44. Ozone Hole <ul><li>Breakdown of the ozone into oxygen which does not block ultraviolet waves </li></ul>
  • 45. Scrubber <ul><li>A device that attaches to smokestacks to remove some of the more harmful pollutants before they are released into the air </li></ul>
  • 46. Classify each of the following as either a primary or secondary air pollution? Smog Secondary Air Pollutant
  • 47. Chalk Dust Primary Air Pollutant Tobacco Smoke Secondary Air Pollutant Acid Rain Secondary Air Pollutant
  • 48. What are three sources of outdoor air pollution? <ul><li>Motor Vehicles </li></ul><ul><li>Electrical Power Plants </li></ul><ul><li>Industries </li></ul>
  • 49. How do scrubbers help reduce air pollution? <ul><li>Scrubbers move gases through a spray of water that dissolves many pollutants before they are released into the atmosphere </li></ul>
  • 50. References <ul><li>Slides 2, 3 &amp; 4 http://www.dangermouse.net/gurps/amber/atlas/triana.html </li></ul><ul><li>Slide 5 </li></ul><ul><li>http://www.truckworld.com/How-To-Tech/03-tire_pressure/03-pressure.html </li></ul><ul><li>Slide 6 </li></ul><ul><li>http://www. aseairport .com/ highaltitude .html </li></ul>

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