Observing the Solar System

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Across
  1. 3. a natural satellite that revolves around a planet
  2. 6. the middle layer of the Sun's atmosphere
  3. 7. an oval shape that the orbits of most planets follow
  4. 8. huge reddish loops of gas that link different parts of sunspot regions
  5. 9. means "crown"
  6. 10. system where the Earth and the other planets revolve around the Sun
  7. 12. eruptions of gas from the Sun - cause the Northern Lights
  8. 13. energy producing process in the sun where hydrogen atoms join together to form helium
  9. 16. system where the Earth is at the center of the revolving planets
  10. 17. the inner layer of the Sun's atmosphere
Down
  1. 1. thin streams of electrically charged particles
  2. 2. means "color"
  3. 4. areas of gas on the Sun's surface that are cooler than the gases around them
  4. 5. the outermost layer of the sun's interior where gases rise and cool
  5. 6. central region of the Sun that produces a lot of energy
  6. 11. middle layer of the Sin's interior that transfers energy
  7. 14. means "light"
  8. 15. scientist that found that the orbit of each planet is an ellipse