Asteroids, Meteors and Comets

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Across
  1. 2. the shape of a comet's orbit
  2. 5. a meteor that survives the Earth's atmosphere and lands on the ground
  3. 8. the envelope of gases surrounding the Earth or another planet
  4. 9. of or from outside the Earth
  5. 10. a large, bowl-shaped cavity in the ground or on the surface of a planet or moon, typically caused by a crashing meteorite
  6. 11. made up of a nucleus of ice and dust
Down
  1. 1. a small, rapidly moving meteor burning up in the Earth's atmosphere
  2. 3. a small body of matter from outer space that enters Earth's atmosphere
  3. 4. region of the solar system beyond the orbit of Neptune believed to contain comets, asteroids, and other small bodies made largely of ice
  4. 6. the resistance that one surface or object encounters when moving over another
  5. 7. a spherical shell of cometary bodies believed to surround the Sun far beyond the outermost planets