Energy

5. A device that applies force.
8. The energy of electric charges is electric energy.
9. The force exerted on a machine.
10. A principle stating that energy cannot be created or destroyed, but can be altered from one form to another.
11. The ratio of the force produced by a machine to the force applied to it.
13. The movement caused within a fluid by the tendency of hotter and therefore less dense material to rise.
14. A energy that has potential energy stored in chemical bonds that hold chemical compounds.
15. The energy an object has due to its motion.
16. Stored energy based on position and shape of an object.
17. The force exerted by the machine.
18. The capacity of the physical system to do work.

1. Energy The energy in the nucleus of an atom.
2. A natural fuel such as coal or gas.
3. The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.
4. The process by which heat or electricity is directly transmitted through a substance.
6. Transformation The process of changing one form of energy to another.
7. A activity involving mental or physical effort.
8. A form of energy that is reflected or emitted from objects in the form of electrical and magnetic waves.
12. The total potential and kinetic energy of the particles in an object.
16. The rate of doing work.