Ps Unit 7 Test

22 Questions | Total Attempts: 93

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Ps Unit 7 Test

Questions and Answers
  • 1. 
    ____ are used for medical imaging.
    • A. 

      Gamma rays

    • B. 

      Infrared waves

    • C. 

      X-rays

    • D. 

      Radio waves

  • 2. 
    An ocean wave has a frequency of 2.5 Hz with a wavelength of 10 m.  What is the velocity of the wave?
    • A. 

      25 m/s

    • B. 

      .25 m/s

    • C. 

      4 m/s

    • D. 

      .25 m

  • 3. 
    Energy (in scientific terms) is defined as ______________.
    • A. 

      Moving an object a certain distance

    • B. 

      The force exerted on an object

    • C. 

      The ability to do work

    • D. 

      The side effect of drinking a red bull

  • 4. 
    The highest pitch humans can hear has a wavelength of 0.02 m in air and a speed of 340 m/s.  What is the frequency of this sound wave?
    • A. 

      17000 Hz

    • B. 

      6.8 HZ

    • C. 

      .000588 Hz

    • D. 

      170 Hz

  • 5. 
    Using figure 7.1, what is the highest point on the wave called?
    • A. 

      Crest

    • B. 

      Trough

    • C. 

      Rarefaction

    • D. 

      Compression

  • 6. 
    The electromagnetic waves interacting with the water molecules in your food to make it hot are ____.
    • A. 

      Microwaves

    • B. 

      X-rays

    • C. 

      Gamma rays

    • D. 

      Ultraviolet rays

  • 7. 
    What type of wave is shown in figure 7.1?
    • A. 

      Longitudinal

    • B. 

      Compressional

    • C. 

      Transverse

    • D. 

      Tsunami

  • 8. 
    Using figure 7.1, what is the minimum point on the wave called?
    • A. 

      Crest

    • B. 

      Trough

    • C. 

      Rarefaction

    • D. 

      Compression

  • 9. 
    A circuit that has two or more separate loops for the current go through is a ____.
    • A. 

      Parallel circuit

    • B. 

      Series circuit

    • C. 

      Circuit diagram

    • D. 

      Electron circuit

  • 10. 
    The electromagnetic waves with wavelengths slightly longer than visible light are ____.
    • A. 

      X-rays

    • B. 

      Microwaves

    • C. 

      Infrared waves

    • D. 

      Radio waves

  • 11. 
    A wave has a speed of 250 m/s and frequency of 25 Hz.  What is the wavelength?
    • A. 

      10.0 m

    • B. 

      10.0 Hz

    • C. 

      .10 m

    • D. 

      .10 Hz

  • 12. 
    For a given wave, if the frequency increases, the wavelength ____.
    • A. 

      Increases

    • B. 

      Decreases

    • C. 

      Stays the same

    • D. 

      Does not exist

  • 13. 
    The electromagnetic waves that come from the sun and tanning beds (which can cause skin cancer) are ____.
    • A. 

      Radio waves

    • B. 

      Microwaves

    • C. 

      Infrared waves

    • D. 

      Ultraviolet rays

  • 14. 
    Electromagnetic waves ____.
    • A. 

      Are compressional waves

    • B. 

      Are transverse waves

    • C. 

      Must have a medium

    • D. 

      Are generated by static electricity

  • 15. 
    Electromagnetic radiation with the shortest wavelengths is ____.
    • A. 

      Gamma rays

    • B. 

      Visible light

    • C. 

      Radio waves

    • D. 

      Infrared waves

  • 16. 
    Sound travels faster in ____ than in water.
    • A. 

      Air

    • B. 

      Steel

    • C. 

      Cork

    • D. 

      Water vapor

  • 17. 
    The unit used to measure frequency is the ____.
    • A. 

      Newton

    • B. 

      Joule

    • C. 

      Decibel

    • D. 

      Hertz

  • 18. 
     Waves in which the particles of the medium move only perpendicular to the motion of the wave are ____ waves.
    • A. 

      Transverse

    • B. 

      Compressional

    • C. 

      Uniform

    • D. 

      Light

  • 19. 
    Electromagnetic radiation with the longest wavelengths is ____.
    • A. 

      Gamma rays

    • B. 

      Visible light

    • C. 

      Radio waves

    • D. 

      Infrared waves

  • 20. 
    Wave A carries more energy than wave B. Wave B has a smaller ____ than wave A.
    • A. 

      Frequency

    • B. 

      Wavelength

    • C. 

      Speed

    • D. 

      Amplitude

  • 21. 
    A wave will travel only as long as it has ____ to carry.
    • A. 

      Energy

    • B. 

      Mass

    • C. 

      Amplitude

    • D. 

      Matter

  • 22. 
    Waves in which the particles of the medium move only in the same direction as the motion of the wave are ____ waves.
    • A. 

      Transverse

    • B. 

      Compressional

    • C. 

      Uniform

    • D. 

      Light

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