1. Mechanical Advantage The measurement of how useful a machine is to the job.

2. Mechanical Advantage Defined as the ratio between the output force and input force.

3. When MA is great than 1: it multiplies the input force. Good for lifting heavy objects. When MA is less than 1: it multiplies distance. Good when traveling a distance.

4. Efficiency Measures how useful a machine is at working.

5. Simple Machines Basic machines used to make work easier for a job.

6. Simple Machines Lever Pulley Wheel and Axle Inclined Plane Wedge Screw

7. Compound Machine A machine made of two or more simple machines.