Across
- 4. A device that increase the amount or direction of the force
- 7. Moving an object a distance
- 9. The number of times a machine increase or multiplies the force
- 10. Detectable air waves created by vibration;measured as wave frequencies
- 12. How well a machine overcomes friction
- 13. The rate at which work is done
- 14. The energy produced by the motions of molecules and atoms
- 16. _____ machines have only one or two parts
- 17. Resistance to movement between two surfaces that touch
Down
- 1. The structure of atoms and molecules and the functions of their particles
- 2. ______machines combine several simple machines
- 3. Wave lengths of electromagnetic radiation;optics is the study of the use of light
- 5. The push or pull on an object to move it
- 6. The study of force
- 8. The opposition to movement(often called inertia)
- 11. Magnets can be used to produce electricity which can create power
- 15. The study of force which may be on objects that are moving or at rest