Simple Machines

1. When a force causes an object to move in the direction of the force, it is ____.
8. An _______ _____ is a force that is applied to an object by a person or another object.
9. A simple machine that consists of a wheel over which a rope, chain, or wire passes.
10. A measure of the force amplification achieved by using a tool, mechanical device or machine system.
14. A simple machine that consists of a bar that pivots at a fixed point called a fulcrum.

2. The work done by the machine on an object.
3. A ramp is an example of an ________ _____.
4. A rod or spindle (either fixed or rotating) passing through the center of a wheel or group of wheels.
5. A simple machine that is made up of 2 inclined planes and that moves; often used for cutting.
6. Accomplishment of or ability to accomplish a job with a minimum expenditure of time and effort.
7. A simple machine that consists of an inclined plane wrapped around a cylinder; example: a jar lid.
11. When you apply a force to a machine through a distance.
12. Two toothed wheels fit together either directly or through a chain or belt so one wheel will turn the other.
13. _____ is the rate at which work is done or energy is transformed.