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Electromagnetic Radiation Study Guide www.njctl.org Slide 3 / 42 - - PDF document
Electromagnetic Radiation Study Guide www.njctl.org Slide 3 / 42 - - PDF document
Slide 1 / 42 Slide 2 / 42 Electromagnetic Radiation Study Guide www.njctl.org Slide 3 / 42 Define the following terms/concepts. Slide 4 / 42 1 Electromagnetic Radiation Slide 5 / 42 2 Electromagnetic Spectrum Slide 6 / 42 3 Radio Wave
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4 Microwave
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5 Radar
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6 Infrared Light
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7 Visible Light
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8 Ultraviolet Radiation
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9 X-Rays
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10 Gamma Rays
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11 Opaque object
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12 Transparent object
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13 Reflection
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14 Absorption
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15 Refraction
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Directions: Select the answer choice that best completes the statement or answers the question.
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16 Electromagnetic Radiation is produced by: A the sun B light bulbs C nuclear reaction D all of the above
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17 As electromagnetic waves travel, they do not lose energy. A True B False
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18 Which of the following electromagnetic wavelengths would have the highest frequency? A 100 m B 10 m C 1 m D 0.1 m
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19 Which of the following forms of electromagnetic radiation has the shortest wavelength? A Visible light B X-Ray C Microwaves D Radio Waves
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20 Radio waves have the longest wavelengths of all electromagnetic waves. A True B False
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21 How many primary colors are there in visible light? A 2 B 3 C 4 D 5
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22 The highest energy electromagnetic waves are: A radio waves B visible light waves C gamma rays D x-rays
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23 If an object hit by white light appears green, which of the following colors of light must be absorbed by the
- bject?
A Red B Orange C Yellow D All of the above
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24 When light travels from water to air, its speed: A increases B decreases C stays the same
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25 Which of the following waves in the visible light spectrum bends the most when it is refracted? A Orange B Yellow C Violet D Blue
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Directions: Answer the following thoroughly.
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26 How do electromagnetic waves differ from mechanical waves?
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27 An electromagnetic wave has a frequency of 2 GHz (2,000,000,000 Hz). What is the wavelength of the wave?
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28 Red light has a frequency of 4.6 X 10 14 Hz (460,000,000,000,000 Hz). What is the wavelength
- f red light?
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29 List the following electromagnetic waves in order
- f decreasing wavelength (increasing energy) –
Gamma Rays, Microwaves, Radio Waves, Visible Light Waves, Ultraviolet Waves, X-Ray Waves, and Infrared Waves.
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30 Explain how a radio works, including its parts, as well as the difference between AM and FM radios.
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31 Why is it impossible for human beings to see infrared and ultraviolet light?
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32 Compare/Contrast UVA, UVB, and UVC rays.
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33 Why are Gamma rays and X-Rays so dangerous to come into contact with?
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34 Explain how we perceive an object’s color.
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