Unit 8 test review

Edit Answers
12345678910111213141516171819202122232425262728
Across
  1. 3. the layer of the sun in which fusion happens
  2. 5. a system of billions of stars, gas and dust held together by gravity
  3. 10. particles leave the sun and cause the northern lights
  4. 12. layer in which visible light is produced
  5. 13. the phase stars become when hydrogen fusion runs out of fuel to make helium
  6. 14. rocky object that lands on Earth's surface
  7. 17. the average distance between Earth and the sun
  8. 19. area beyond Neptune where many comets come from
  9. 20. the process of combining hydrogen to make helium
  10. 21. giant explosion of radiation
  11. 22. a measure of the distance that a photon of light travels in a year
  12. 24. energy produced radiates outward in this layer
  13. 26. a huge explosion when a star ends fusion and collapses
  14. 27. the final stage of a massive star
  15. 28. the final known phase of a small star
Down
  1. 1. looks chaotic and unorganized with many bright young stars
  2. 2. when gas and dust begins spinning and heating up
  3. 3. the layer in which hot plasma rises then sink
  4. 4. thin, red layer where storms occur
  5. 6. a rocky object which contains ice and forms a tail
  6. 7. most stars in the night sky are in this phase
  7. 8. rocky object that burns up in Earth's atmosphere
  8. 9. huge loops of plasma anchored to the sun's surface
  9. 11. the final stage of a medium sized star that often pulses with energy
  10. 15. contains old stars with little gas and dust
  11. 16. hottest layer, solar wind is produced from this
  12. 18. dark patches on the sun's surface
  13. 23. contains old and young stars with arms that wind outward
  14. 25. a rocky object usually originates between Mars and Jupiter