Name:_______________
Date:__________
1. List three kinds of invisible light.
2. When energy is absorbed by electrons, the electrons move to a ______ _____ _____.
3. The absorbed energy of electrons is released as _______.
4. The speed of light is ________ miles per second, which is
_________kilometers per second.
5. The movement of electrons describes ____________.
6. Any form of energy which moves as a wave is called _________.
7. Light with the shortest wavelength and the highest frequency are called __________.
8. The visible spectrum consists of frequencies between _____-_____ hertz.
9. The visible light with the longest wavelength is ________.
10. One thousand waves or cycles per second is called a __________.
11. The radio waves between the frequencies of one billion hertz and one trillion hertz are called __________.
12. A magnetron tube generates _____________.
13. Mosquitoes can see ________ ______.
14. ___________ ______ triggers the skin to produce vitamin D.
15. Most gamma rays come from _____________.
16. Can gamma rays can be seen?
17. __________ is made up of streams of photons.
18. If electrons release their photons from very high energy levels, the result is _____________.
19. Which travels faster, high-energy or low-energy light?
20. Can Light waves travel through a vacuum?
21. Electromagnetic waves with the ________ wavelength have the lowest energy.
22. The color violet is about ____ trillion hertz.
23. Violet light has the ________ wavelength.
24. __ _____ ________ operate on frequencies of 535 kilohertz to 1605 kilohertz.
25. FM stands for _________ __________.
26. Without _____, heat cannot be generated by a microwave oven.
27. AM stands for _________ __________.
28. Name the metal used to absorb x-rays.
29. ___________ _________ is often used to kill bacteria.
30. Radiation affects ____ growing cells more than ____ growing
cells.