Use Of Light In Astronomy Quiz

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  • 1/15 Questions

    Which type of telescope uses a lens to gather and focus incoming light?

    • Refracting telescope
    • Reflecting telescope
    • Radio telescope
    • X-ray telescope
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About This Quiz


Welcome to the "Use of Light in Astronomy Quiz"! As we all know, light is a fundamental tool in astronomy. It allows us to explore and understand the universe. This quiz will test your knowledge of how light is used to study celestial objects and unravel the mysteries of the cosmos.

From the basics of telescopes and the properties of light to fascinating phenomena like refraction, diffraction, and redshift, this quiz will take you through the essential concepts of light in astronomy. You will encounter questions on different types of telescopes, the electromagnetic spectrum, and the role of light in revealing the chemical composition and motion of celestial objects.

Whether you're an aspiring astronomer, a space enthusiast, or simply curious about the wonders of the universe, this quiz will challenge your understanding and expand your knowledge of how light is harnessed to unlock the secrets of the cosmos. Get ready to shine a light on your astronomical knowledge and embark on this enlightening journey through the "Use of Light in Astronomy Quiz"!

Use Of Light In Astronomy Quiz - Quiz

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  • 2. 

    What is the term for the total amount of light energy emitted by a star or any other celestial object?

    • Luminosity

    • Magnitude

    • Flux

    • Intensity

    Correct Answer
    A. Luminosity
    Explanation
    Luminosity refers to the total amount of energy produced by different celestial bodies(stars, galaxy) per unit time and it is basically measured in joules per second or watts in SI units.

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  • 3. 

    Which instrument splits light into its component colors to analyze the chemical composition of celestial objects?

    • Gravitational wave detector

    • Spectrometer

    • Particle accelerator

    • Geiger counter

    Correct Answer
    A. Spectrometer
  • 4. 

    Which type of light is absorbed by the Earth's atmosphere, making ground-based observations challenging?

    • Radio waves

    • Microwaves

    • X-rays

    • Ultraviolet

    Correct Answer
    A. Ultraviolet
    Explanation
    Ultraviolet light is absorbed by the Earth's atmosphere, making ground-based observations challenging.

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  • 5. 

    What is the name for the phenomenon in which light is redirected by an object's gravitational field, causing a distortion in the path of light?

    • Doppler effect

    • Redshift

    • Blueshift

    • Gravitational lensing

    Correct Answer
    A. Gravitational lensing
  • 6. 

    What is the name for the measurement of the brightness of a star as seen from Earth?

    • Luminosity

    • Flux

    • Apparent Magnitude

    • Intensity

    Correct Answer
    A. Apparent Magnitude
  • 7. 

    What is the process by which a telescope collects and focuses light to form an image?

    • Diffraction

    • Reflection

    • Refraction

    • Absorption

    Correct Answer
    A. Refraction
  • 8. 

    Which color has the shortest wavelength in the visible light spectrum?

    • Red

    • Blue

    • Green

    • Violet

    Correct Answer
    A. Violet
    Explanation
    Violet light has the shortest wavelength in the visible light spectrum, meaning its waves are closely spaced together. This results in violet light having higher energy photons compared to other colors in the spectrum.

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  • 9. 

    Which type of electromagnetic radiation is commonly used in astronomy to study the cooler objects in the universe?

    • Ultraviolet

    • X-rays

    • Infrared

    • Gamma rays

    Correct Answer
    A. Infrared
    Explanation
    Infrared light is used to see through cold dust; study warm gas and dust, and relatively cool stars; and detect molecules in the atmospheres of planets and stars.

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  • 10. 

    Which space telescope has been used to discover thousands of exoplanets by detecting the slight dimming of stars when planets pass in front of them?

    • Kepler Space Telescope

    • Chandra X-ray Observatory

    • Hubble Space Telescope

    • Spitzer Space Telescope

    Correct Answer
    A. Kepler Space Telescope
  • 11. 

    What phenomenon occurs when light waves spread out and interfere with each other, producing a pattern of light and dark regions?

    • Reflection

    • Refraction

    • Diffraction

    • Scattering

    Correct Answer
    A. Diffraction
    Explanation
    Diffraction of light waves produces both constructive and destructive interference. Diffracted light incident on a screen perpendicular to gaps that diffract the light produces a pattern of bright and dark fringes.

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  • 12. 

    What is the term for the scattering of light by particles or molecules in the atmosphere, causing the blue color of the sky?

    • Reflection

    • Refraction

    • Diffraction

    • Rayleigh 

    Correct Answer
    A. Rayleigh 
    Explanation
    Rayleigh scattering of sunlight in Earth's atmosphere causes diffuse sky radiation, which is the reason for the blue color of the daytime and twilight sky, as well as the yellowish to reddish hue of the low Sun.

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  • 13. 

    What is the term for the change in color of an object due to its motion relative to an observer?

    • Redshift

    • Blueshift

    • Green shift

    • Violet shift

    Correct Answer
    A. Blueshift
    Explanation
    Blueshift is the term for the change in color of an object due to its motion relative to an observer.

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  • 14. 

    What is the term for the bending of light around an object or through a narrow slit?

    • Reflection

    • Refraction

    • Diffraction

    • Absorption

    Correct Answer
    A. Diffraction
    Explanation
    Diffraction, which is defined as the bending of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle, is another significant property of microstructures.

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  • 15. 

    Which type of light is used to study the high-energy processes in the universe, such as black holes and supernovae?

    • Infrared

    • X-rays

    • Ultraviolet

    • Gamma rays

    Correct Answer
    A. X-rays

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  • Current Version
  • Jul 19, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 19, 2023
    Quiz Created by
    Smriti Singh
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