22A and 22B

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Across
  1. 2. this zone is the region within the sun where energy travels primarily as electromagnetic waves
  2. 4. these form when pairs of local magnetic disturbances appear on the sun's surface
  3. 7. we know the moons interior is similar to earths from collecting data from
  4. 9. the moon has a nearly perfect spherical shape likely because it rotates_____
  5. 11. a depression on the surface of the moon usually surrounded by circular walls
  6. 13. the outer region of the sun's atmosphere
  7. 14. streams of plasma that rise up into and descend from the sun's corona
  8. 16. severe solar storms that can disrupt telecommunication on Earth
  9. 18. about 93% of the sun's energy output is emitted as this
  10. 19. moon's surface gravity is ___________ of Earth's
  11. 21. in this zone hot plasma rises, cools, and descends into the sun's interior again
  12. 22. the sun is composed mostly of this
Down
  1. 1. the moon has a very thin atmosphere because it has too little _____
  2. 3. this unit is defined as the distance between the earth and sun
  3. 4. just a continuation of the sun's atmosphere
  4. 5. the entire range of electromagnetic waves released by the sun is the solar _____
  5. 6. visible surface of the sun
  6. 8. materials blasted out of a crater during a meteorite impact
  7. 10. compared to earth, the average density of the moon is
  8. 12. some of these are cracks in the moon's crust that formed when it cooled and shrank
  9. 15. large, flat region on the moon's surface that are made of hardened basaltic lava
  10. 17. gases in the moon's thin atmosphere come mostly from here
  11. 20. a large, dark area on the surface of the moon