Isaiah Amazing Sixth Grade Science Puzzle

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Across
  1. 1. ground
  2. 5. has been heated by magma
  3. 7. Heat energy in earths interior from water or streams
  4. 9. Water that is partly salty and partly fresh
  5. 10. The horizontal distance between two wave crests
  6. 13. a combined force of attraction among water molecules
  7. 14. The amount of mass in a given space
  8. 15. The direct transfere of energy through empty space
  9. 18. The force that oppose the motion of one surface as it moves
  10. 19. Water that flows over the ground surface rather than soaking into
  11. 20. An area of land that is covered with shallow layer of water
  12. 21. some or all of the year
Down
  1. 2. A coastal inlet or bay were salt water and fresh water mix
  2. 3. The land of an area that supplies water to a river system
  3. 4. combined.
  4. 6. a form of energy with wavelength that are shorter
  5. 8. other surrounding materials
  6. 9. Something made from things that once were alive
  7. 11. the layer of the atmosphere were
  8. 12. another surface
  9. 16. visible light
  10. 17. Two or more substances that are mixed together but not