matthew Comets, Asteroids & Meteors Quiz

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Across
  1. 2. comets take up to 30 million years to orbit the Sun
  2. 6. burns in Earth’s atmosphere, seen as a shooting star
  3. 8. asteroids made mostly of metal
  4. 9. tail always points away from the Sun due to solar wind
  5. 10. second largest asteroid, visible from Earth
  6. 12. large asteroids, similar in size to dwarf planets like Pluto
  7. 13. largest asteroid, contains water
  8. 15. extinction may have been caused by a large asteroid impact
  9. 17. asteroids made mostly of carbon
  10. 19. giant dirty snowballs made of frozen gases, rock, and dust
  11. 20. Belt region between Mars and Jupiter where most asteroids are found
Down
  1. 1. asteroids made mostly of silicon
  2. 3. Belt region past Neptune where short-period comets come from
  3. 4. Cloud distant edge of the solar system where long-period comets come from
  4. 5. small asteroids, also called shooting stars when in Earth’s atmosphere
  5. 7. rocky bodies with no air or atmosphere
  6. 8. small asteroid still in space
  7. 11. a meteor that survives the atmosphere and hits Earth
  8. 14. comets orbit the Sun in less than 200 years
  9. 16. comets very bright and visible from Earth
  10. 18. & iron common materials found in meteorites