Across
- 2. the energy contained within a system that is responsible for its temperature
- 5. the central point, pin, or shaft on which a mechanism turns or oscillates
- 8. the point on which a lever rests or is supported and on which it pivots
- 9. the complete path of an electric current
- 12. a rigid bar resting on a pivot, used to help move a heavy or firmly fixed load with one end when pressure is applied to the other
- 13. ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine
- 14. power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines
- 15. energy transferred to or from an object via the application of force along a displacement
- 16. occurs when an object vibrates
- 18. a wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord
- 24. energy of a body or a system with respect to the motion of the body or of the particles in the system
- 25. An object that possesses mechanical energy is able to do work
- 26. The conversion of one form of energy into another, or the movement of energy from one place to another
- 27. the ratio of the useful work performed by a machine or in a process to the total energy expended or heat taken in
Down
- 1. a simple machine of the inclined plane type consisting of a spirally grooved solid cylinder and a correspondingly grooved hollow cylinder into which it fits
- 3. energy can neither be created nor destroyed - only converted from one form of energy to another
- 4. a simple lifting machine consisting of a rope which unwinds from a wheel on to a cylindrical drum or shaft joined to the wheel to provide mechanical advantage
- 6. a plane inclined at an angle to the horizontal
- 7. a container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power
- 10. Energy stored in the bonds of chemical compounds
- 11. the principle by which the total energy remains constant in a system that is not subject to external influence
- 16. any of the basic mechanical devices for applying a force, such as an inclined plane, wedge, or lever
- 17. the energy of a body or a system with respect to the position of the body or the arrangement of the particles of the system
- 19. radiant energy that travels in waves at the speed of light
- 20. energy related to forces on electrically-charged particles and the movement of those particles
- 21. machine made up of two or more simple machines
- 22. radiant energy emitted by the sun
- 23. a triangular shaped tool, a portable inclined plane, and one of the six simple machines