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 (D)</p> Signup and view all the answers

What happens when light passes through a prism?

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

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

<p>White light (A)</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 (B)</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 (A)</p> Signup and view all the answers

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

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

What type of electromagnetic wave is used in medical imaging?

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

What is the longest wavelength of visible light?

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

What is an example of a use of infrared light?

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

What is an example of a use of radio waves?

<p>Radio communication (B)</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. (D)</p> Signup and view all the answers

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

<p>Gamma Rays (B)</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 (D)</p> Signup and view all the answers

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

<p>Cooking (A)</p> Signup and view all the answers

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

<p>Infrared (IR) Light (B)</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 (A)</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. (C)</p> Signup and view all the answers

What is the purpose of the dispersion of light?

<p>To separate light into its constituent colors. (C)</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. (D)</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. (B)</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. (D)</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. (C)</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. (C)</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. (C)</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 (B)</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 (D)</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 (A)</p> Signup and view all the answers

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

<p>Composition (A)</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 (C)</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 (B)</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 (C)</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 (D)</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. (C)</p> Signup and view all the answers

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

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

What is the primary application of gamma rays?

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

What is the main characteristic of ultraviolet light?

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

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

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

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

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

What is the primary application of microwaves?

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

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

<p>Shortest wavelength, highest frequency (B)</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 (D)</p> Signup and view all the answers

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

<p>White light (D)</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 (C)</p> Signup and view all the answers

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