6th Grade Ch 1 Review

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6th Grade Ch 1 Review

  1. 1. 6th Grade Ch. 1 Review
  2. 2. What is the condition of Earth’s atmosphere at a particular time and place ?
  3. 3. weather
  4. 4. Fill in the Blank Earth’s atmosphere makes conditions on Earth ________ for living things.
  5. 5. suitable
  6. 6. What is a form of oxygen that has three atoms instead of the usual two?
  7. 7. ozone
  8. 8. What two gases make up most of the air?
  9. 9. <ul><li>nitrogen </li></ul><ul><li>oxygen </li></ul>
  10. 10. What is water in the form of a gas?
  11. 11. water vapor
  12. 12. What are harmful substances in the air, water or soil called?
  13. 13. pollutants
  14. 14. What is the cause of most air pollution?
  15. 15. burning fossil fuels
  16. 16. What fraction of the air pollution from human activities comes from cars and other motor vehicles?
  17. 17. almost ½
  18. 18. List 5 natural sources of air pollution.
  19. 19. <ul><li>Ocean waves </li></ul><ul><li>Wind blowing molds & pollen </li></ul><ul><li>Forest fires </li></ul><ul><li>Soil erosion </li></ul><ul><li>Dust storms </li></ul><ul><li>Erupting volcanoes </li></ul>
  20. 20. What is the term that means the average number of pollen grains in a cubic meter of air?
  21. 21. pollen count
  22. 22. What is an instrument used to measure changes in air pressure?
  23. 23. barometer
  24. 24. What type of barometer consists of a glass tube open at the bottom end and partially filled with mercury?
  25. 25. mercury barometer
  26. 26. What are the 2 units of air pressure?
  27. 27. <ul><li>inches of mercury </li></ul><ul><li>millibars </li></ul>
  28. 28. Fill in the blank. As air pressure decreases, the density of air _____.
  29. 29. decreases
  30. 30. Name 2 ways that a mercury barometer is different from an aneroid barometer.
  31. 31. An aneroid barometer is smaller than mercury barometer and does not contain liquid.
  32. 32. What layer of the atmosphere do we live in?
  33. 33. troposphere
  34. 34. In what layer of the atmosphere does the aurora borealis occur?
  35. 35. ionosphere
  36. 36. What layer do communication satellites orbit Earth?
  37. 37. exosphere
  38. 38. Which layer of the atmosphere has no definite outer limit?
  39. 39. thermosphere
  40. 40. What layer of the atmosphere has the coldest temperatures in the atmosphere?
  41. 41. mesosphere
  42. 42. Fill in the blank. Acid rain forms when _____ and ____ combine with water in the air.
  43. 43. nitrogen oxides and sulfur oxides
  44. 44. List 3 other gases found in dry air, besides nitrogen and oxygen.
  45. 45. <ul><li>Argon </li></ul><ul><li>Carbon dioxide </li></ul><ul><li>Neon </li></ul><ul><li>Helium </li></ul><ul><li>Methane </li></ul><ul><li>Krypton </li></ul><ul><li>Hydrogen </li></ul>
  46. 46. What layer of the atmosphere protects Earth’s surface from being hit by most meteoroids?
  47. 47. mesosphere
  48. 48. What substance found in the stratosphere absorbs ultraviolet energy from the sun?
  49. 49. ozone
  50. 50. What is the formula to calculate the density of air?
  51. 51. Density = Mass Volume
  52. 52. List the layers of the atmosphere in order moving up from the Earth’s surface.
  53. 53. <ul><li>troposphere </li></ul><ul><li>stratosphere </li></ul><ul><li>mesosphere </li></ul><ul><li>thermosphere </li></ul><ul><li>ionosphere </li></ul><ul><li>exosphere </li></ul>

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