science

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Across
  1. 1. what is the space inside something
  2. 4. the outside
  3. 6. 2 things combined to form one thing
  4. 9. speed and direction
  5. 12. how something feels when touched
  6. 14. when a sound waves get bunched up
  7. 16. when something spins
  8. 17. the inside
  9. 18. how much thermal energy is present
  10. 21. the top of a magnet
  11. 22. its atoms are compact
  12. 24. when there is energy that uses fuel
  13. 25. its atoms are loose
  14. 27. things mixed together
  15. 28. the sun and all the planets
  16. 29. what makes orbit possibal
  17. 30. space
  18. 33. its atoms are very loose
  19. 34. a huge ball of land
  20. 38. unit for work
  21. 41. the rate of change in velocity
  22. 42. opposites have the same reactions
Down
  1. 2. the 4th planet to the sun
  2. 3. the building blocks of life
  3. 5. the powerhouse of the cell
  4. 7. when something is in motion
  5. 8. mass and acceleration
  6. 10. plants cells have but human dont
  7. 11. something that attracts metal
  8. 13. things that rotate
  9. 15. the distance an object travels in a time
  10. 19. the brain of a cell
  11. 20. unit for force
  12. 23. how something smells
  13. 26. when something has the potential to move
  14. 29. rays used for cancer
  15. 31. when a sound wave gets stretched out
  16. 32. the 3 planet from the sun
  17. 35. things that are balanced
  18. 36. how much is in something
  19. 37. the first planet to the sun
  20. 39. what does a sponge do to water
  21. 40. inertia