Science Ch. 4 Vocab

2. Machine: A combination of two or more simple machines.
7. A device that changes the force or increases the motion from work.
9. Potential Energy (GPE): Energy that is due to the gravitational forces between objects.
11. Potential Energy: Energy that is due to chemical bonds.
12. The rate at which energy is converted from one form to another.
13. The ability to cause change.
14. Anything around which you can imagine a boundary.
17. Advantage: The ratio of output force to input force.
18. Energy: The energy a moving object has because of its motion.

1. Force applied through a distance.
3. Energy: Energy that is stored due to the interactions between objects.
4. Potential Energy: Energy stored by compressing or stretching an object.
5. Machine: A machine that does work with only one movement. The six types are lever, pulley, wheel and axle, inclined plane, screw, and wedge.
6. A push or pull exerted on an object (Review Vocabulary).
8. The ratio of output work to input work, often expressed as a percentage.
10. of Conservation of Energy: States that energy can be transferred or transformed, but it cannot be created or destroyed.
15. Energy: The sum of the kinetic energy and the potential energy (specifically elastic and gravitational) of the objects in a system.
16. The union or junction of surfaces (Academic Vocabulary).