Electromagnetic Spectrum Quiz Questions And Answers

Reviewed by Markus Amano
Markus Amano, PhD (Physics) |
Theoretical Physicist
Review Board Member
Markus Antonio Amano, PhD, is a theoretical physicist. With 10 years of teaching experience and multiple publications, he is currently a postdoctoral researcher at Henan University, focusing on Nuclear Matter from a holographic perspective. He holds a PhD from the University of Alabama and a BS in Engineering Physics from the Colorado School of Mines.
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By Jpocino
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  • 1/10 Questions

    What is visible light composed of?

    • Gamma rays
    • Radio waves
    • Red, orange, yellow, green, blue and violet light
    • Radar
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About This Quiz


What do you know about the electromagnetic spectrum? If you have a good knowledge of electromagnetic waves, play the quiz given below and evaluate yourself. Electromagnetic energy describes all the different kinds of energies released into space by stars, such as the Sun, and is made when an atom absorbs energy. The electromagnetic spectrum is a continuum of all electromagnetic waves arranged according to frequency and wavelength. Take up this quiz based on the electromagnetic spectrum. All the best!

Electromagnetic Spectrum Quiz Questions And Answers - Quiz

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  • 2. 

    Electromagnetic waves that you can see are called:

    • Infrared rays

    • Microwaves

    • X-rays

    • Visible light

    Correct Answer
    A. Visible light
    Explanation
    Visible light refers to the portion of the electromagnetic spectrum that is visible to the human eye. It includes all the colors of the rainbow, from red to violet. Unlike other types of electromagnetic waves such as infrared rays, microwaves, and x-rays, visible light can be detected by our eyes, allowing us to perceive our surroundings and the colors of objects. Therefore, the correct answer is visible light.

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  • 3. 

    Which electromagnetic waves have the shortest wavelengths and highest frequencies?

    • Gamma rays

    • Radio waves

    • X-rays

    • Ultraviolet rays

    Correct Answer
    A. Gamma rays
    Explanation
    Gamma rays have the shortest wavelengths and highest frequencies among the given options. Gamma rays are a form of electromagnetic radiation that have the highest energy and are produced by the most energetic events in the universe, such as nuclear reactions and supernovae. Due to their high frequency and short wavelength, gamma rays have the ability to penetrate through most materials and are used in various fields including medicine, industry, and research.

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  • 4. 

    How much of the electromagnetic spectrum is visible to the human eye?

    • All of it

    • None of it

    • Most of it

    • Only a small part

    Correct Answer
    A. Only a small part
    Explanation
    The electromagnetic spectrum consists of a wide range of wavelengths, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. Out of this entire spectrum, only a small part is visible to the human eye, which is referred to as visible light. This visible light spectrum ranges from approximately 400 to 700 nanometers in wavelength.

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  • 5. 

    Which of the following is correct in order of lowest to highest energy?

    • X-rays, Visible Light, Microwave

    • Microwave, Visible Light, Gamma-rays

    • Ultraviolet, Visible Light, Gamma-rays

    • Ultraviolet, Gamma-rays, Visible Light

    Correct Answer
    A. Microwave, Visible Light, Gamma-rays
    Explanation
    The given answer is correct because it arranges the types of electromagnetic radiation in order of increasing energy. Microwaves have the lowest energy, followed by visible light, and then gamma-rays have the highest energy.

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  • 6. 

    Which type of emission maps the dust between stars?

    • Gamma rays

    • Infrared

    • Ultraviolet

    • X-rays

    Correct Answer
    A. Infrared
    Explanation
    Infrared emission maps the dust between stars because infrared light has longer wavelengths than visible light, allowing it to penetrate through dust particles. This enables astronomers to observe the heat emitted by dust, which is often found in regions where stars are forming. Infrared observations are crucial for studying the structure and composition of interstellar dust clouds, as well as for detecting and characterizing young stars and planetary systems embedded within these clouds.

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  • 7. 

    What quantity is constant in all EM waves?

    • Mass

    • Speed

    • Energy

    • All of the above

    Correct Answer
    A. Speed
    Explanation
    The correct answer is speed. In electromagnetic waves, such as light, the speed remains constant in a vacuum, which is approximately 3 x 10^8 meters per second. This is known as the speed of light and is a fundamental constant in physics. The mass and energy of the waves can vary, but the speed remains the same.

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  • 8. 

    What type of waves are used to transmit cellular telephone messages?

    • Gamma rays

    • Radio waves

    • Microwaves

    • Visible light

    Correct Answer
    A. Radio waves
    Explanation
    Cellular telephone messages are transmitted using radio waves, a type of electromagnetic radiation. Radio waves have longer wavelengths than other forms of electromagnetic radiation, which allows them to travel long distances and penetrate buildings and other obstacles. They are well-suited for carrying information wirelessly over long distances, making them ideal for cellular communication.

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  • 9. 

    The waves that have shorter wavelengths than visible light are:

    • TV

    • Radio stations

    • Ultraviolet rays

    • Gamma rays

    Correct Answer(s)
    A. Ultraviolet rays
    A. Gamma rays
    Explanation
    Ultraviolet rays and gamma rays have shorter wavelengths than visible light. Ultraviolet rays have slightly shorter wavelengths than visible light, while gamma rays have the shortest wavelengths in the electromagnetic spectrum. TV and radio waves, on the other hand, have longer wavelengths than visible light.

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  • 10. 

    Radioactive materials can cause this type of emission:

    • Gamma rays

    • Radio

    • X-rays

    • Ultraviolet 

    Correct Answer
    A. Gamma rays
    Explanation
    Gamma rays are a type of high-energy electromagnetic radiation emitted by radioactive materials. They are a form of ionizing radiation, which means they have enough energy to remove tightly bound electrons from atoms, leading to potential damage to living cells and genetic material. Gamma rays have extremely short wavelengths and high frequencies, making them one of the most penetrating forms of radiation.

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Markus Amano |PhD (Physics) |
Theoretical Physicist
Markus Antonio Amano, PhD, is a theoretical physicist. With 10 years of teaching experience and multiple publications, he is currently a postdoctoral researcher at Henan University, focusing on Nuclear Matter from a holographic perspective. He holds a PhD from the University of Alabama and a BS in Engineering Physics from the Colorado School of Mines.

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