sol review

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Across
  1. 3. the smallest part of a substance
  2. 4. a tiny fragment that consists of matter
  3. 5. when a liquid turns into solids
  4. 8. large objects made of dust and ice that orbit the Sun
  5. 10. an imaginary straight line around which an object spins.
  6. 12. changes liquid into gas
  7. 14. unit to measure power
  8. 15. a ______ orbits around the Sun,
  9. 17. when a solid turns into a liquid
  10. 21. Invisible rays that are part of the energy that comes from the sun
  11. 23. the amount of matter
  12. 25. the amount of matter
  13. 26. a substance that is made from an atom
  14. 27. the structure of a cell
  15. 31. the amount of _____ to move an object
  16. 32. a substance that changes when it is combined with another substance
  17. 33. anything that takes up space
  18. 34. the action by a planet of going round in an orbit
  19. 35. the negative part of the molecule on the outside
  20. 36. spinning on it's axis
  21. 37. The condition of the system at a given time
  22. 38. light that us humans can see
  23. 39. unit to measure work
Down
  1. 1. electrons flow to complete a circuit
  2. 2. water vapor into liquid
  3. 6. to always be in motion
  4. 7. small chunks of rock that travel through space
  5. 9. a group of atoms bonded together
  6. 11. the word that means to resits sliding
  7. 13. the scientific word for opposites on magnets
  8. 16. is the lowest temperature that could ever happen
  9. 18. the force by which a planet draws objects toward its center.
  10. 19. the appearance of a mineral surface
  11. 20. allows the flow of a current in one direction
  12. 22. hot or cold
  13. 24. the positive part of a molecule
  14. 27. unit to measure force
  15. 28. a period of the year that is distinguished by special climate conditions
  16. 29. occur when one heavenly body such as a moon,planets moves into the shadow of another heavenly body
  17. 30. the neutral part of a molecule