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1. Which of the following forms of electromagnetic energy has a longer wavelength than infrared waves?

   1.   ?    Microwaves
   2.   ?    Ultraviolet waves
   3.   ?    X rays
   4.   ?    Visible light

2. Which of the following forms of electromagnetic energy has a higher frequency than ultraviolet waves?

   1.   ?    X rays
   2.   ?    Visible light
   3.   ?    Microwaves
   4.   ?    Infrared waves

3. Which of the following forms of electromagnetic energy has the longest wavelength?

   1.   ?    Radio waves
   2.   ?    Microwaves
   3.   ?    Infrared waves
   4.   ?    Visible light

4. Which of the following forms of electromagnetic energy has the highest frequency?

   1.   ?    Gamma rays
   2.   ?    X rays
   3.   ?    Ultraviolet waves
   4.   ?    Infrared waves

5. The electromagnetic waves that are detectable by the human eye have

   1.   ?    a shorter wavelength infrared waves.
   2.   ?    a lower frequency than infrared waves.
   3.   ?    a shorter wavelength than ultraviolet waves.
   4.   ?    a wavelength that falls in between ultraviolet waves and X rays.

6. Compared to the other forms of electromagnetic radiation, radio waves

   1.   ?    have the lowest energy and lowest frequency.
   2.   ?    have the lowest energy and highest frequency.
   3.   ?    have the highest energy and lowest frequency.
   4.   ?    have the highest energy and highest frequency.

7. What form of electromagnetic radiation is used in radar?

   1.   ?    Short wavelength microwaves
   2.   ?    Long wavelength radio waves
   3.   ?    Short wavelength infrared waves
   4.   ?    Long wavelength ultraviolet waves

8. Infrared radiation is also known as

   1.   ?    heat radiation.
   2.   ?    radio signals.
   3.   ?    radar.
   4.   ?    magnetic resonance waves.

9. Which of the following statements regarding X-rays is false?

   1.   ?    X rays have a shorter wavelength and lower energy than ultraviolet rays.
   2.   ?    X rays pass easily through skin and muscles, but are absorbed by bone.
   3.   ?    X rays have a longer wavelength than gamma rays.
   4.   ?    X rays have a higher energy and shorter wavelength than visible light.

10. Which of the following forms of electromagnetic radiation are dangerous to humans, but also enables your body to make a particular vitamin?

    1.   ?    Ultraviolet waves
    2.   ?    X rays
    3.   ?    Gamma rays
    4.   ?    Infrared rays