The Solar System

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Across
  1. 4. Venus is the ___________ night sky object after the Moon.
  2. 5. This word is Greek for "wanderer"
  3. 7. Mars has the largest _____________ in the solar system
  4. 8. Earth’s magnetic field protects us from the effects of the solar _______
  5. 13. The Solar System includes all objects under the Sun’s __________ influence
  6. 14. Gases on Uranus and Neptune are almost all completely ________
  7. 15. The Sun would collapse if the energy released by ______ didn’t balance the force of gravity
  8. 17. Jupiter is mostly made of __________ and helium
  9. 18. Mercury is the ___________ moving planet
  10. 19. This planet is tilted almost completely on its side
  11. 21. This moon of Jupiter has the most volcanoes in the Solar System
  12. 22. Sunspots increase and decrease on ________ year cycles
Down
  1. 1. Solar flares are caused when the ___________ fields of sunspots connect
  2. 2. The average distance from Earth to the Sun is one __________ Unit
  3. 3. The outer planets are sometimes called _________ which means "like Jupiter"
  4. 6. Earth has the largest ___________ for its size.
  5. 9. The light of the sun is radiated from the ______________
  6. 10. A star’s energy comes from hydrogen being fused into ___________
  7. 11. Mars's red surface is evidence that it once had _________ on its surface.
  8. 12. This moon of Jupiter has liquid water and possibly life
  9. 13. Venus's thick CO2 atmosphere creates a strong __________ effect
  10. 16. Jupiter's Great Red Spot is an enormous __________
  11. 20. Saturn is distinguished by its large __________