Across
- 4. to pull together
- 8. a magnet produced by an electric current, usually a core of iron wrapped in a conductor
- 9. unbroken path of an electrical conductor that allows electrical current to flow from the power source and back again
- 12. energy energy related to the movement of charged particles; electrical energy comes from batteries and power plants.
- 15. material that does not permit electric charge to pass through it
- 16. cell a battery that changes chemical energy into electrical energy
- 17. a device that can open or close an electric circuit
- 19. to push apart
- 20. a subatomic particle with a negative electrical charge
Down
- 1. energy energy obtained from light sources; examples: the sun, laser beams
- 2. field the invisible field that carries magnetic force to other objects
- 3. a device that attracts other magnets, iron containing materials, and other metals such as nickel
- 5. electricity the buildup of electrical charges on a surface produced by contact and separation of dissimilar materials
- 6. a measure of how well a given material will conduct electricity. Good conductors have little resistance. Light bulbs have a higher resistance. Insulators have a very high resistance.
- 7. circuit a circuit with a break in it
- 10. continuous flow of electrons
- 11. energy energy of motion; (ex: wind, water in a waterfall, and a jet plane speeding through the air have mechanical energy; sound is a form of mechanical energy)
- 12. anything involving electric charges, but usually refers to static, direct current, and alternating current electricity
- 13. energy heat energy caused by moving particles
- 14. material that permits electric charge
- 18. circuit a circuit with no breaks or interruptions