Sound Review - Chapter 2

22 Questions | Total Attempts: 154

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Sound Review - Chapter 2

This is a review about sound.


Questions and Answers
  • 1. 
    Sound waves are caused by
    • A. 

      Amplitude

    • B. 

      Vibrations

    • C. 

      A medium

  • 2. 
    The sound of your voice is produced by the
    • A. 

      Force of air making your vocal cords vibrate

    • B. 

      Vibration of your middle ear

    • C. 

      Vibration of air inside your lungs

  • 3. 
    Sound waves transfer energy by
    • A. 

      Pushing and pulling air particles

    • B. 

      Forcing the air out of a space

    • C. 

      Moving air particles up and down

  • 4. 
    Jim wants to make the pitch of a sound wave lower. He should
    • A. 

      Decrease its wavelength

    • B. 

      Increase its amplitude

    • C. 

      Decrease its frequency

  • 5. 
    Nina listens to an ambulance as it travels past her. The sound of the siren
    • A. 

      Decreases in pitch

    • B. 

      Increases in wavelength

    • C. 

      Decreases in amplitude

  • 6. 
    The intensity of a sound is determined by its
    • A. 

      Amplitude

    • B. 

      Frequency

    • C. 

      Speed

  • 7. 
    Brian turns up the volume on his stereo. The stereo sends an electrical signal to the speakers. The signal changes the sound’s
    • A. 

      Frequency

    • B. 

      Wavelength

    • C. 

      Intensity

  • 8. 
    Your hearing can be damaged by
    • A. 

      Low-frequency sounds

    • B. 

      Long-wavelength sounds

    • C. 

      High-intensity sounds

  • 9. 
    A doctor uses ultrasound to
    • A. 

      Test hearing

    • B. 

      Examine internal organs

    • C. 

      Locate objects in the dark

  • 10. 
    A CD player reads information from pits on the CD. This information is used to make sound waves. First, the CD player produces
    • A. 

      Electrical signals

    • B. 

      Vibrations

    • C. 

      Grooves

  • 11. 
    A sound wave is produced by the
    • A. 

      Vibration of an object

    • B. 

      Transfer of energy through a vacuum

    • C. 

      Movement of air in the lungs

  • 12. 
    When you speak, the sound waves are produced by
    • A. 

      The vibration of hairs in the cochlea

    • B. 

      Air making your vocal cords vibrate

    • C. 

      Electrical signals generated in your brain

  • 13. 
    As a sound wave moves through the air, it creates
    • A. 

      Only areas of compressed particles

    • B. 

      Areas of high and low pressure

    • C. 

      Vibrations in the inner ear

  • 14. 
    In order to change the pitch of a sound, you should change its
    • A. 

      Amplitude

    • B. 

      Frequency

    • C. 

      Intensity

  • 15. 
    The notes played on a flute and those played on a violin have the same pitch, but they sound very different. This is because their sounds have different
    • A. 

      Wavelengths

    • B. 

      Combinations of overtones

    • C. 

      Natural frequencies

  • 16. 
    The intensity of a sound measures the
    • A. 

      Frequency of the sound wave

    • B. 

      Pitch of the sound

    • C. 

      Amount of energy carried by the sound wave

  • 17. 
    Tia uses a synthesizer to create sound waves. She increases the amplitude of the sound wave. What do you predict will happen to the sound?
    • A. 

      The pitch will go up.

    • B. 

      The loudness will increase.

    • C. 

      The frequency will decrease.

  • 18. 
    An engineer places acoustic tiles on a ceiling. The tiles are designed to
    • A. 

      Change the pitch of the sound waves

    • B. 

      Absorb and redirect sound waves

    • C. 

      Change the frequency of sound waves

  • 19. 
    The part of a telephone that produces sound waves is the
    • A. 

      Microphone

    • B. 

      Diaphragm

    • C. 

      Electrical signal

  • 20. 
    Ultrasound echoes enable animals such as bats and dolphins to
    • A. 

      Clean themselves

    • B. 

      Remove obstacles in their paths

    • C. 

      Locate food and avoid large objects

  • 21. 
    Interpreting Visuals Using the picture below, answer the following question. There are three main types of musical instruments: stringed, wind, and percussion. The instrument in the picture is a cello. What type of instrument is it?
  • 22. 
    What produces the sound in this instrument?