cst review

1234567891011121314151617181920212223
Across
  1. 2. richter scale measures
  2. 5. plates sliding past each other
  3. 7. composed of silicate minerals
  4. 8. sea floor spreading
  5. 9. resulted from photosynthesis in plants
  6. 11. created by salinity variations
  7. 13. source of energy for sun
  8. 16. stars begin cycle
  9. 19. cool air with warm air over it
  10. 21. absorbed and reflected
  11. 22. yellow star in milky way
  12. 23. formed by light gases
Down
  1. 1. rift valley is
  2. 2. energy is possible where there is
  3. 3. water requirements for water supply
  4. 4. evidence of extinct animals
  5. 6. final stage of a star
  6. 8. carbon dioxide used by plants
  7. 10. earthquake instrument
  8. 12. gaseous big planet
  9. 14. least explosive volcano
  10. 15. abundant energy
  11. 17. shifts in continents
  12. 18. surface ocean currents
  13. 20. formed by eruption of volcanoes