Chapter 4

3. Energy: The energy a moving object has because of its motion.
7. Machine: A machine that does work with only one movement. The six types are lever, pulley, wheel and axle, inclined plane, screw, and wedge.
9. Potential Energy (GPE): Energy that is due to the gravitational forces between objects.
13. Potential Energy: Energy that is due to chemical bonds.
16. Force applied through a distance.
17. The union or junction of surfaces.
18. Energy: Energy that is stored due to the interactions between objects.

1. Energy: The sum of the kinetic energy and the potential energy of the objects in a system.
2. Machine: A combination of two or more simple machines.
4. The ratio of output work to input work, often expressed as a percentage.
5. Anything around which you can imagine a boundary.
6. The ability to cause change.
8. Potential Energy: Energy stored by compressing or stretching an object.
10. The rate at which energy is converted from one form to another.
11. A device that changes the force or increases the motion from work.
12. Advantage: The ratio of output force to input force.
14. of Conservation of Energy: States that energy can be transferred or transformed, but it cannot be created or destroyed.
15. A push or pull exerted on an object.