8.2 The solar System

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Across
  1. 3. which planet is farthest from the sun
  2. 7. what is meteoroid called when entering earth's atmosphere?
  3. 8. which planet's surface is similar to that of our moon
  4. 11. what is a planet?
  5. 12. what is the massive explosions on the sun called?
  6. 13. what is a celestial object made up of ice&dust?
  7. 15. which planet which still orbit earth but is a dwarf planet?
Down
  1. 1. how long has the sun existed for?
  2. 2. which planet has the biggest Radius
  3. 4. who has a average temperature of 470c?
  4. 5. what gives Uranus and Neptune it blue color?
  5. 6. what is the dark spots on the sun?
  6. 9. what element is the sun composed of?(there is a & symbol)
  7. 10. which planets are made of mostly hydrogen and helium?
  8. 14. which planet is closest to earth in terms of its surface temperature?