Crossword Puzzle 22-23

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Across
  1. 2. neutral charge in an atom
  2. 4. Hard object
  3. 6. System- Where the sun and all the planets are
  4. 7. of waves that pass through a fixed point
  5. 8. how heavy something weighs
  6. 11. Light -
  7. 13. what the earth does every day
  8. 15. - how fast or slow something moves
  9. 17. the inside of an atom
  10. 19. what four things do we have every year
  11. 20. Energy -energy released by reactions within atomic nuclei, as in nuclear fission or fusion.
  12. 22. second the highest ray of danger
  13. 23. the space from crest to crest and trough to trough
  14. 26. these happen at the beach
  15. 29. rays- highest ray of danger
  16. 30. the earth tilts on this every day
  17. 31. radiation- an electric and magnetic disturbance
Down
  1. 1. positive charge in an atom
  2. 3. what we use to look at things in space
  3. 5. things that we drink
  4. 9. Negative charge in an atom
  5. 10. u can see
  6. 12. waves- ray that is not dangerous
  7. 14. what comes out of cars
  8. 16. we live on
  9. 18. curves inward
  10. 21. -ability to do or act; capability of doing
  11. 24. something.
  12. 25. ray of danger
  13. 27. planet- only dwarf planet in the galaxy
  14. 28. curves outward