8th Grade Ch. 3 Sec. 5 Comets, Asteroids & Meteors

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8th Grade Ch. 3 Sec. 5 Comets, Asteroids & Meteors

  1. 1. Ch. 3 Sec. 5 Comets, Asteroids, & Meteors YouTube video-Bill Nye Comets & Meteors song
  2. 2. comet “ dirty snowball” chunk of ice & dust orbits- long narrow ellipse
  3. 3. Parts of a comet coma nucleus tail outer layer inner layer formed by solar wind pushing gas away from the sun
  4. 4. tail nucleus coma
  5. 5. Most comets- found in Kuiper belt (between Neptune & Pluto) or Oort cloud (beyond Pluto)
  6. 6. comet Pigpen from “Peanuts” Interactive Comet Animation
  7. 8. Comet Hale-Bopp in 1997 The passage of Hale-Bopp was notable for inciting a degree of panic about comets not seen for decades. Rumors that the comet was being followed by an alien spacecraft inspired a mass suicide among followers of the Heaven's Gate cult .
  8. 10. <ul><li>Comet Halley was visible in 1910 and again in 1986. The next time it will be visible will be in early 2062. </li></ul>
  9. 11. Asteroids <ul><li>Too small & too numerous to be considered full fledged planets </li></ul><ul><li>Most revolve around Sun between orbits of Mars & Jupiter= asteroid belt </li></ul>
  10. 12. the asteroid Ida and its newly-discovered moon, Dactyl
  11. 13. Asteroid belt
  12. 14. asteroids
  13. 15. meteoroid  meteor  meteorite meteor shower
  14. 16. meteor
  15. 18. meteorite
  16. 19. A shooting star is really a meteor.
  17. 21. Let's Review
  18. 22. coma <ul><li>outer layer of a comet </li></ul>
  19. 23. “ dirty snowball” <ul><li>Nickname for a comet </li></ul>
  20. 24. nucleus <ul><li>Inner layer of a comet </li></ul>
  21. 25. tail <ul><li>Formed by solar wind pushing gas away from the Sun </li></ul>
  22. 26. elliptical (ellipse) <ul><li>The shape of a comet’s orbit around the Sun </li></ul>
  23. 27. meteor <ul><li>A shooting star is really a ________. </li></ul>
  24. 28. asteroids <ul><li>Too small & too numerous to be considered full fledged planets </li></ul>
  25. 29. meteorite <ul><li>chunk of rock that lands on Earth’s surface </li></ul>
  26. 30. meteoroid <ul><li>chunk of rock or dust in space </li></ul>
  27. 31. Comets or asteroids <ul><li>Meteoroids usually come from________ or ___________. </li></ul>
  28. 32. friction <ul><li>causes meteoroids to burn up in the atmosphere </li></ul>
  29. 33. Halley’s Comet <ul><li>The comet that is observed from Earth every 76 years </li></ul>

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