Gr 8 Natural Sciences Ch 3.4: Spectrum of visible light
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Questions and Answers

What is the range of wavelengths of light that are visible to the human eye?

  • Electromagnetic spectrum
  • Visible spectrum (correct)
  • Infrared spectrum
  • Ultraviolet spectrum

    • What is the process of separating a wave into its constituent parts?

  • Dispersion (correct)
  • Refraction
  • Reflection
  • Composition

    • What is the acronym used to remember the colors of the visible spectrum?

  • ROYGBIV (correct)
  • RBGIYOV
  • VIBGYOR
  • YOVIGBR

    • What is the color with the longest wavelength and lowest frequency?

    <p>Red</p> Signup and view all the answers

    What happens when light passes through a prism?

    <p>It is dispersed</p> Signup and view all the answers

    What is the result of combining the colors of the visible spectrum?

    <p>White light</p> Signup and view all the answers

    What is the purpose of the prism in the activity to investigate the visible spectrum?

    <p>To disperse the light</p> Signup and view all the answers

    What is the material needed to set up the prism in the activity?

    <p>A glass prism and a light source</p> Signup and view all the answers

    What is the distance between two corresponding points on consecutive waves?

    <p>The wavelength of light</p> Signup and view all the answers

    What type of electromagnetic wave is used in medical imaging?

    <p>X-rays</p> Signup and view all the answers

    What is the frequency of light?

    <p>The number of waves that pass a point in one second</p> Signup and view all the answers

    What is the longest wavelength of visible light?

    <p>700 nanometers</p> Signup and view all the answers

    What is an example of a use of infrared light?

    <p>Thermal imaging</p> Signup and view all the answers

    What is an example of a use of radio waves?

    <p>Radio communication</p> Signup and view all the answers

    What is the main difference between wavelength and frequency of light?

    <p>Wavelength is the distance between two corresponding points on consecutive waves, while frequency is the number of waves that pass a point in one second.</p> Signup and view all the answers

    What is the type of electromagnetic wave with the shortest wavelength?

    <p>Gamma Rays</p> Signup and view all the answers

    What is the purpose of separating light into its constituent parts?

    <p>To analyze the properties of each color</p> Signup and view all the answers

    Which of the following is NOT an application of ultraviolet (UV) light?

    <p>Cooking</p> Signup and view all the answers

    What is the type of electromagnetic wave that is felt as heat?

    <p>Infrared (IR) Light</p> Signup and view all the answers

    What is the characteristic of visible light that allows us to see it?

    <p>Its wavelength is between 400-700 nanometers</p> Signup and view all the answers

    What is the main characteristic of the visible spectrum?

    <p>It is a range of wavelengths that are visible to the human eye.</p> Signup and view all the answers

    What is the purpose of the dispersion of light?

    <p>To separate light into its constituent colors.</p> Signup and view all the answers

    What is the characteristic of violet light in the visible spectrum?

    <p>It has the shortest wavelength and highest frequency.</p> Signup and view all the answers

    What is the result of shining a light through a prism?

    <p>The light is separated into its constituent colors.</p> Signup and view all the answers

    What is the composition of white light?

    <p>A combination of the seven colors of the visible spectrum.</p> Signup and view all the answers

    What is the purpose of the activity to investigate the visible spectrum?

    <p>To demonstrate the composition of white light.</p> Signup and view all the answers

    What is the characteristic of the colors of the visible spectrum?

    <p>They have different wavelengths and frequencies.</p> Signup and view all the answers

    What is the role of the prism in the activity to investigate the visible spectrum?

    <p>To separate the light into its constituent colors.</p> Signup and view all the answers

    What is the main reason why we see a rainbow when light passes through raindrops in the atmosphere?

    <p>Because of the dispersion of light as it passes through the raindrops</p> Signup and view all the answers

    What is the main characteristic of the color violet in the visible spectrum?

    <p>It has the shortest wavelength and highest frequency</p> Signup and view all the answers

    What is the purpose of separating white light into its constituent colors?

    <p>To demonstrate the composition of white light</p> Signup and view all the answers

    What is the term used to describe the way in which something is made up?

    <p>Composition</p> Signup and view all the answers

    What is the result of shining a flashlight beam through a prism?

    <p>The light is separated into its constituent colors</p> Signup and view all the answers

    What is the term used to describe the process of separating a wave into its constituent parts?

    <p>Dispersion</p> Signup and view all the answers

    What is the main characteristic of the colors in the visible spectrum?

    <p>They have different wavelengths and frequencies</p> Signup and view all the answers

    What is the purpose of using a white screen or piece of paper in the activity to investigate the visible spectrum?

    <p>To display the separated colors of the visible spectrum</p> Signup and view all the answers

    What is the main difference between the wavelength of red light and violet light in the visible spectrum?

    <p>Violet light has a shorter wavelength than red light.</p> Signup and view all the answers

    What is the purpose of using ultraviolet light in forensic science?

    <p>To detect and analyze fingerprints.</p> Signup and view all the answers

    What is the relationship between the wavelength and frequency of light?

    <p>As the wavelength increases, the frequency decreases.</p> Signup and view all the answers

    What is the primary application of gamma rays?

    <p>Sterilization and emission from radioactive materials.</p> Signup and view all the answers

    What is the characteristic of infrared light that makes it useful for remote controls?

    <p>It is felt as heat and can transmit information.</p> Signup and view all the answers

    What is the primary difference between the visible spectrum and the entire electromagnetic spectrum?

    <p>The visible spectrum is a small part of the entire electromagnetic spectrum.</p> Signup and view all the answers

    What is the main characteristic of ultraviolet light?

    <p>Used in forensics and to sterilize medical equipment</p> Signup and view all the answers

    What is the relationship between the wavelength and frequency of light?

    <p>As wavelength increases, frequency decreases</p> Signup and view all the answers

    What is the main difference between the visible spectrum and the entire electromagnetic spectrum?

    <p>The visible spectrum is a small part of the entire electromagnetic spectrum</p> Signup and view all the answers

    What is the characteristic of red light in the visible spectrum?

    <p>Longest wavelength</p> Signup and view all the answers

    What is the primary application of microwaves?

    <p>Cooking and satellite transmissions</p> Signup and view all the answers

    What is the characteristic of the color violet in the visible spectrum?

    <p>Shortest wavelength, highest frequency</p> Signup and view all the answers

    What is the purpose of using a prism in the activity to investigate the visible spectrum?

    <p>To separate light into its constituent colors</p> Signup and view all the answers

    What is the result of combining the colors of the visible spectrum?

    <p>White light</p> Signup and view all the answers

    Why do we see a rainbow when light passes through raindrops in the atmosphere?

    <p>Because of the dispersion of light</p> Signup and view all the answers

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