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

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  • 1. Ch. 3 Sec. 5 Comets, Asteroids, & Meteors YouTube video-Bill Nye Comets & Meteors song
  • 2. comet “ dirty snowball” chunk of ice & dust orbits- long narrow ellipse
  • 3. Parts of a comet coma nucleus tail outer layer inner layer formed by solar wind pushing gas away from the sun
  • 4. tail nucleus coma
  • 5. Most comets- found in Kuiper belt (between Neptune & Pluto) or Oort cloud (beyond Pluto)
  • 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 .
  • 9.  
  • 10.
    • Comet Halley was visible in 1910 and again in 1986. The next time it will be visible will be in early 2062.
  • 11. Asteroids
    • Too small & too numerous to be considered full fledged planets
    • Most revolve around Sun between orbits of Mars & Jupiter= asteroid belt
  • 12. the asteroid Ida and its newly-discovered moon, Dactyl
  • 13. Asteroid belt
  • 14. asteroids
  • 15. meteoroid  meteor  meteorite meteor shower
  • 16. meteor
  • 17.  
  • 18. meteorite
  • 19. A shooting star is really a meteor.
  • 20.  
  • 21. Let's Review
  • 22. coma
    • outer layer of a comet
  • 23. “ dirty snowball”
    • Nickname for a comet
  • 24. nucleus
    • Inner layer of a comet
  • 25. tail
    • Formed by solar wind pushing gas away from the Sun
  • 26. elliptical (ellipse)
    • The shape of a comet’s orbit around the Sun
  • 27. meteor
    • A shooting star is really a ________.
  • 28. asteroids
    • Too small & too numerous to be considered full fledged planets
  • 29. meteorite
    • chunk of rock that lands on Earth’s surface
  • 30. meteoroid
    • chunk of rock or dust in space
  • 31. Comets or asteroids
    • Meteoroids usually come from________ or ___________.
  • 32. friction
    • causes meteoroids to burn up in the atmosphere
  • 33. Halley’s Comet
    • The comet that is observed from Earth every 76 years