Forces and Movement

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Across
  1. 3. ability to float in fluid
  2. 6. resistance between and object and a liquid or gas
  3. 9. machine that converts electrical energy to mechanical energy
  4. 13. a smooth shape that lessens resistance from air or water
  5. 14. force when 2 objects make contact
  6. 15. amount of carbon dioxide produced by an activity
  7. 16. non renewable energy source
  8. 17. resistance between a moving object and a surface
Down
  1. 1. mechanical device that spins to move a boat or aircraft
  2. 2. force that pulls objects towards the earths center
  3. 4. resistance between a rolling object and a surface
  4. 5. upward acting force that counteracts the force of gravity
  5. 7. force that occurs without making contact with an object
  6. 8. force acting on an object due to gravity, mass
  7. 10. to stay on the surface of a liquid
  8. 11. force that pushes an object forward
  9. 12. pieces of a propeller on a helicopter