Circuits

2. a device that changes the voltage of an alternation current
5. a gas-filled incandescent bulb
9. the electric box that distributes the electricity coming into a house or other building to each outlet and switch
11. a light bulb that provides very efficient lighting
13. a material that conducts some electricity
14. a layer of gas surrounding Earth
16. a place where trash and other waste materials are buried and covered with soil
17. a special power plant where electricity is reduced in voltage so it can be used in homes, offices, and so on
19. to put into effect

1. a gas in the atmosphere that traps heat and contributes to warming temperatures
3. a semiconductor device that allows the flow of current in one direction
4. an electric current where electricity flows in one direction
6. a kind of light with short wavelengths. It can't be seen with the naked eye.
7. a light bulb that uses less electricity and lasts longer than an incandescent light bulb
8. relating to the sun
10. a device that converts AC electricity into DC
12. a place where electric power is produced to be spread out and used
15. a pure substance that is made of atoms that are all the same
18. an electric current where electricity flows back and forth