Physical Science Crossword Puzzle

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Across
  1. 2. the amount of space that a substance or object occupies
  2. 4. the degree of compactness of a substance
  3. 6. increase in the rate or speed of something
  4. 7. process by which heat is transferred by movement of a heated fluid such as air or water
  5. 9. the substance of which a physical object is composed
Down
  1. 1. the rate at which someone or something is able to move or operate
  2. 3. the transfer of heat through matter by communication of kinetic energy from particle to particle with no net displacement of the particles
  3. 5. A push or pull on an object due to its interaction with another object
  4. 6. the maximum extent of a vibration or oscillation, measured from the position of equilibrium
  5. 8. a quantity or aggregate of matter usually of considerable size