Across
- 2. Device used to change electricity from one voltage to another
- 5. The electrical flow
- 6. Material that allows electricity to flow easily through it
- 7. Wave of electromagnetic energy used to carry an electronic signal through the atmosphere; also referred to as an electromagnetic carrier wave
- 11. A very powerful, narrow beam of light in which all the light rays have the same wavelength
- 13. A tiny chip of semiconducting material, such as silicon, that contains many of the electricalcircuits needed to operate an electronic device
- 15. The part of a communication system that changes the senders message into electrical impulses and sends it through the channel to the receiver
- 16. Scientific law expressing the relationship among electrical amperage, voltage, and resistance; it takes one volt to force one ampere of current through a resistance of one ohm
- 18. In communication, thin, flexible, glass strands that transmit light over great distances in order to carry information
- 20. Direct current; the one-directional flow of electrons
- 22. Material that resists the flow of electricity
- 23. The number of cycles or changes in direction of alternating current; measured in hertz, or cycles per second
- 25. A single pathway that electrical current flows through to more than one device; if one device along the path stops working, they all stop
- 27. Material that has no measurable resistance to electricity
- 28. The movement of electrons from one atom to another
Down
- 1. The pressure needed to push electricity through a circuit
- 3. Material that can be used as either a conductor of electricity or an insulator
- 4. A buildup of electrons that are not in motion and are seeking to discharge
- 8. Alternating current; electrical flow that constantly changes direction
- 9. Alternating current; electrical flow that constantly changes direction
- 10. A device that changes one form of energy, such as sound, into an electrical signal that can be transmitted by a sender through a channel to a receiver
- 12. An electrical signal having distinct values
- 14. Anything that opposes or slows the flow of electrical current
- 17. The pathway that electricity flows along; often includes parts such as a wire and a device to which the electricity is being delivered
- 19. An electrical circuit having multiple pathways carrying current to individual devices; if one device stops working, the others are not affected
- 21. An electrical signal that changes continuously
- 24. Direct current; the one-directional flow of electrons
- 26. A measure of electric power; calculated by multiplying the amperes used times the voltage of the circuit