Doppler Effect Quiz
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Doppler Effect Quiz

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@EquitableCarnelian2831

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Questions and Answers

How does the frequency of waves change when the wavelength appears to decrease due to the Doppler Effect?

  • Frequency appears to increase (correct)
  • Frequency appears to decrease
  • Frequency becomes unpredictable
  • Frequency remains constant

    • What happens to the wavelength of waves emitted by a moving object as perceived by an observer in front of the object?

  • The wavelength appears smaller (correct)
  • The wavelength becomes invisible
  • The wavelength appears larger
  • The wavelength remains the same

    • Why do waves behind a moving vehicle appear to stretch out?

  • Due to decreased frequency
  • Due to increased frequency
  • Due to decreased wavelength
  • Due to increased wavelength (correct)

    • What is the main cause of the Doppler Effect on waves?

    <p>Changes in wave speed</p> Signup and view all the answers

    What happens to the frequency of waves emitted by a moving object as perceived by observers due to the Doppler Effect?

    <p>Frequency changes based on observer position</p> Signup and view all the answers

    How does an observer perceive the frequency of waves when the wavelength appears to be stretched behind a moving object?

    <p>Frequency appears to decrease</p> Signup and view all the answers

    Which type of waves transfer energy from the source to an absorber?

    <p>Transverse waves</p> Signup and view all the answers

    What is a common property of all electromagnetic waves?

    <p>They can travel through a vacuum</p> Signup and view all the answers

    How many types of electromagnetic waves form a continuous spectrum?

    <p>7</p> Signup and view all the answers

    In which part of the spectrum is visible light located?

    <p>Highest frequency region</p> Signup and view all the answers

    Which type of radiation is highly ionizing and can cause harm to cells and tissues?

    <p>Ultraviolet (UV) radiation</p> Signup and view all the answers

    What happens to the energy of electromagnetic radiation as its frequency increases?

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

    What part of the electromagnetic spectrum is responsible for giving you a sun tan?

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

    Which type of light travels down fibre optic cables more efficiently than visible light?

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

    What invisible signals do remote controls send to devices like TVs?

    <p>Infrared signals</p> Signup and view all the answers

    What part of the electromagnetic spectrum do security cameras utilize to see in the dark?

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

    What process is responsible for making certain substances glow when exposed to ultraviolet light?

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

    What kind of light is the only part of the electromagnetic spectrum that the human eye can see?

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

    What percentage of the whole electromagnetic spectrum does visible light take up?

    <p>0.0035%</p> Signup and view all the answers

    Which of the following animals can perceive beyond visible light?

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

    What is the relationship between wavelength and frequency in the visible light spectrum?

    <p>Inversely proportional</p> Signup and view all the answers

    Which color of light has the highest frequency and energy?

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

    How do wavelength and frequency change as you move from red to violet in the visible light spectrum?

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

    Which part of the electromagnetic spectrum is detectable by the human eye?

    <p><strong>Visible light</strong></p> Signup and view all the answers

    What part of the body absorbs x-rays the most?

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

    Which type of electromagnetic wave can be used to effectively kill cancerous tissue?

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

    What happens to the danger associated with electromagnetic waves as their frequency increases?

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

    Which part of the electromagnetic spectrum has the most ionising radiation?

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

    Why are gamma rays considered very dangerous?

    <p>They can kill cells and living tissue</p> Signup and view all the answers

    Which electromagnetic waves are known for their ability to sterilize objects by killing bacteria?

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

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