Question 4: One hertz simply means "one cycle per ________" (typically that which is being counted is a complete cycle); 100 Hz means "one hundred cycles per second", and so on.

Question 5: Various computer buses, such as the ________ connecting the CPU and northbridge, also operate at different frequencies in the megahertz range (for modern products).

Question 7: (For historical reasons, the frequencies of light and higher frequency electromagnetic radiation are more commonly specified in terms of their wavelengths or photonenergies: for a more detailed treatment of this and the above frequency ranges, see ________.)

Question 8: ________ is electromagnetic radiation that is even higher in frequency, and has frequencies in the range of tens (infrared) to thousands (ultraviolet) of terahertz.

Question 9: ________ is often described by its frequency—the number of oscillations of the perpendicular electric and magnetic fields per second—expressed in hertz.