1) Which of the following has the most energy? a) Color green b) Infrared c) Microwaves d) X-rays 2) How much of the electromagnetic spectrum is visible? a) All of it b) Most of it c) None of it d) Only a small part 3) Which of the following has the most energy? a) Blue b) Green c) Red d) Yellow 4) In order of increasing energy, which of the following is the correct sequence? a) Infrared, visible light, ultraviolet, gamma b) Infrared, x-ray, visible light, gamma c) Visible light, gamma, ultraviolet, x-ray d) Visible light, radio waves, ultraviolet, x-ray 5) Which of the following is true about EM waves? a) Gamma rays have the shortest wavelength. b) Light is the only wave that humans can perceive. c) Radio waves are used in television broadcasts. d) All mentioned. 6) Radiant energy spreads out from its source in all directions. a) True b) False 7) People who live in higher altitudes receive more exposure to cosmic radiation than people living in lowlands. a) True b) False 8) Electromagnetic radiation includes only visible light waves. a) True b) False 9) Suntans are the result of skin damage from the sun a) True b) False 10) Most radiation that we are exposed to is man-made. a) True b) False 11) Radiation from a tanning bed is more harmful than radiation from the sun. a) True b) False 12) Living near a nuclear power plant poses less risk of radiation exposure than living in a home or area with high radon levels. a) True b) False 13) Describes a radiation field in terms of the amount of ionization produced in air, not in common use today. a) Gray b) Rad c) Roentgen d) Sievert 14) It is used to describe the dose an exposed patient has absorbed. a) Gray b) Rad c) Roentgen d) Sievert 15) Provides the energy to cause certain dyes to fluoresce and emit visible light, for example, in printed money to display hidden watermarks as a counterfeit protection. a) Microwaves b) Infrared c) Ultraviolet d) Visible Light 16) It is primarily used for diagnostic radiography. a) Radio waves b) Infrared c) X-rays d) Gamma Rays 17) They can be used to kill living cells, such as cancer, but can provoke DNA alteration by interfering with the genetic material of the cell. a) Microwaves b) Ultraviolet c) X-rays d) Gamma Rays 18) Which type of electromagnetic wave does your body emit? a) Infrared waves b) Visible Light c) Ultraviolet rays d) X-rays 19) What is the wavelength of radio waves having the frequency of 3 x 10^10 Hz? a) 1 cm  b) 10 cm c) 10 m d) 100 nm 20) What is the frequency of an unidentified EM wave with a wavelength of 700 nm? a) 4.3 x 10^-14 Hz b) 4.3 x 10^14 Hz c) 4.3 x 10 ^-11 Hz d) 4.3 x 10 ^11 Hz

Electromagnetic Waves

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