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Electromagnetic Spectrum Worksheet

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  • An overexposure to ______________ can result in sunburns and skin cancer.
    ultraviolet rays
  • Microwaves are one type of ____________.
    electromagnetic radiation
  • _____________ can be used to communicate with satellites.
    radio waves
  • Heat radiation, also known as ___________, cannot be seen by your eyes but can be felt by your skin.
    infrared waves
  • What type of technology uses microwaves?
    G. cell phone
  • What type of technology uses ultraviolet waves?
    B. In a hospital to keep surgical equipment sterile
  • Why does a paper plate not heat up in the microwave?
    The paper plate contains very little water!
  • TRUE or FALSE: Electromagnetic radiation includes only visible light waves.
    FALSE - all waves on EMS are considered EM radiation
  • Because __________ have the highest energy of all EM radiation, they are the most damaging to human tissue.
    gamma rays
  • TRUE or FALSE: Communicating with satellites is an application of gamma rays.
    FALSE - radio waves are used for communication
  • Light is classified as _________________ because electrical and magnetic fields vibrate in a light wave.
    electromagnetic radiation
  • What type of technology uses infrared waves?
    D. lamp used to warm a baby chick
  • TRUE or FALSE: The Sun radiates both visible energy and invisible energy.
    TRUE
  • TRUE or FALSE: Microwaves are a type of infrared wave.
    FALSE - microwaves (along with infrared waves) are types of electromagnetic radiation.
  • What type of technology uses radio waves?
    A. TV broadcast signals
  • The ________________ represents the different forms of electromagnetic radiation.
    electromagnetic spectrum
  • What type of technology uses X-Rays?
    C. Examining the inside of a weld in a steel pipe.
  • Why should you use sunscreen and a hat when you are out in the Sun?
    They help block UV radiation (from the Sun)
  • What type of technology uses radar?
    E. measuring the speed of a passing car
  • TRUE or FALSE: X-rays have more energy than gamma rays.
    FALSE - gamma rays have the highest energy
  • Compared to all other types of EM radiation, radio waves have the lowest ____________.
    frequency
  • What type of technology uses gamma rays?
    F. used by an oncologist (physician who studies and treats caner)
  • ______________ is energy that travels by radiation. An example of this is light.
    radiant energy
  • TRUE or FALSE: Radiant energy spreads out from its source in all directions.
    TRUE
  • TRUE or FALSE: Both X-rays and gamma rays have higher frequencies than ultraviolet rays.
    TRUE
  • TRUE or FALSE: Radio waves, microwaves and ultraviolet waves all have longer wavelengths than visible light.
    FALSE - radio and microwave YES, but UV rays are shorter than visible light.
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