The Ultimate Quiz On Light!

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  • 1/11 Questions

    What is our main source of light?

    • Sun
    • Fire
    • Light
    • Candles
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About This Quiz

Light is electromagnetic radiation. Play this informative quiz on sources of light and see what you know about light, its functionality, and its features. This quiz contains a wide range of questions about light ranging from easy, medium, to hard levels. Do you know what Umbra is? What is the source of artificial light? What is the source of natural light? This quiz has answers to all that and much more. If you like this quiz, share it with your friends.

The Ultimate Quiz On Light! - Quiz

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  • 2. 

    Light is a form of

    • Sound

    • Light

    • Fire

    • Energy

    Correct Answer
    A. Energy
    Explanation
    Light is a form of energy because it consists of particles called photons that carry energy. When light interacts with matter, it can transfer its energy, causing various effects such as heating, chemical reactions, or the stimulation of visual receptors in our eyes. Light can be produced by different sources, such as the sun, fire, or artificial light sources, and it travels in the form of electromagnetic waves. Therefore, the correct answer is energy.

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  • 3. 

    The thin wire contained within a light globe is called a 'filament.'

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The thin wire contained within a light globe is called a filament. This is true because a filament is a wire or thread-like structure that is heated by an electric current to produce light in an incandescent light bulb. It is made of a material with a high melting point, such as tungsten, which allows it to withstand the high temperatures generated when electricity passes through it.

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  • 4. 

    A sharp, clear, and complete shadow is called an umbra.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A sharp, clear, and complete shadow is called an umbra. This statement is true because an umbra refers to the darkest part of a shadow where all light is blocked, resulting in a distinct and well-defined shadow. The term "umbra" is commonly used in astronomy to describe the central region of a shadow during an eclipse.

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  • 5. 

    What do you call the distance between one crest of the wave to the crest of the next?

    • Frequency

    • Wavelength

    • Penumbra

    • Refraction

    Correct Answer
    A. Wavelength
    Explanation
    The distance between one crest of a wave to the crest of the next is called the wavelength. Wavelength is a fundamental property of waves, representing the spatial period of the wave. It is commonly measured in units such as meters or nanometers, depending on the type of wave. In the context of electromagnetic waves, such as light or radio waves, wavelength determines the color or frequency of the wave.

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  • 6. 

    A penumbra shadow is clear and sharp.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    A penumbra shadow is not clear and sharp, but rather it is a partially shaded area with some degree of fuzziness or blurriness. This is because a penumbra is formed when only a portion of the light source is blocked, resulting in a partial shadow that has a softer edge compared to the more defined and darker umbra shadow. Therefore, the statement that a penumbra shadow is clear and sharp is incorrect.

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  • 7. 

    A ______________ is formed when an obstacle blocks the passage of light.

    Correct Answer
    shadow
    Explanation
    When an obstacle blocks the passage of light, it creates an area of darkness behind it, which is known as a shadow. Shadows are formed because light cannot pass through the obstacle, causing a lack of illumination in that specific area. This phenomenon occurs when an object or person blocks the path of light, resulting in the formation of a shadow.

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  • 8. 

    What artificial light was created thousands of years ago?

    • Fire

    • Candles

    • Light globes

    • LEDs

    Correct Answer
    A. Candles
    Explanation
    Candles were created thousands of years ago as a source of artificial light. Before the invention of electricity, people used candles made from various materials, such as beeswax or tallow, to illuminate their surroundings. Candles provided a portable and convenient way to have light in the absence of natural light sources. They were widely used in households, temples, and other places where light was needed. Candles played a crucial role in human history, providing light for various activities and contributing to the development of society.

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  • 9. 

    Select the sources of artificial light.

    • Light globe

    • Streetlight

    • Sun

    • Candle

    • Fire

    • Laser

    • Camera

    Correct Answer(s)
    A. Light globe
    A. Streetlight
    A. Candle
    A. Laser
    A. Camera
    Explanation
    The sources of artificial light listed in the answer are light globe, streetlight, candle, laser, and camera. These are all examples of devices or objects that produce light artificially. A light globe is a common type of light bulb used in households. Streetlights are outdoor lights used to illuminate roads and public areas. Candles produce light through the combustion of wax or similar materials. Lasers emit a concentrated beam of light through stimulated emission. Cameras often have a built-in flash that produces artificial light for photography purposes.

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  • 10. 

    Select the sources of natural light.

    • Sun

    • Fire

    • Candles

    • Stars

    • Moon

    Correct Answer(s)
    A. Sun
    A. Fire
    A. Stars
    Explanation
    The sources of natural light mentioned in the given options are the Sun, Fire, and Stars. The Sun is the primary source of natural light, providing sunlight during the day. Fire produces light through combustion, making it another source of natural light. Stars, although located far away from Earth, emit their own light and can be considered as sources of natural light. Candles and the Moon are not mentioned as sources of natural light in the given options.

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  • Current Version
  • Sep 14, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 22, 2016
    Quiz Created by
    MissWarren
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