Simple Machines
Across
- 4. a unit of power equal to 550 foot-pounds per second (745.7 watts).
- 7. the point on which a lever rests or is supported and on which it pivots
- 8. energy that is produced by mechanical, chemical, nuclear, kinetic, gravitational, potential, nuclear, etc.
- 9. and Axle, one of mankind's greatest inventions
- 11. a piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them.
- 13. requires the object to move
- 16. distance, the length of the sloped surface of the ramp
- 17. an apparatus using or applying mechanical power and having several parts, each with a definite function and together performing a particular task.
- 18. advantage, the ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine
Down
- 1. force, the amount of effort used to push down on a rod, or pull on a rope in order to move the weight
- 2. output, the work done by a simple machine, compound machine, or any type of engine model
- 3. machine, a machine made of two or more simple machines
- 5. a way to measure energy
- 6. plane, a plane inclined at an angle to the horizontal.
- 8. a wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used (typically in combination) to raise heavy weights.
- 10. 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
- 12. getting stuff done in a practical way
- 14. force, the force exerted on an object by a simple machine
- 15. a unit for measuring work