Sound waves

Sound waves Quiz

IB MYP Sciences: Quiz

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5 questions, one answer each

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  1. 1. What does the pitch of a sound depend on?

    • A. Amplitude
    • B. Frequency
    • C. Speed
    • D. Medium

  2. 2. In which material does sound travel fastest?

    • A. Air
    • B. Water
    • C. A vacuum
    • D. Steel

  3. 3. An echo is heard 2.0 s after a shout. The speed of sound is 340 m/s. How far away is the reflecting wall?

    • A. 340 m
    • B. 680 m
    • C. 170 m
    • D. 1360 m

  4. 4. Which frequency is ultrasound?

    • A. 15 Hz
    • B. 500 Hz
    • C. 15 kHz
    • D. 40 kHz

  5. 5. In a sound wave, what is a rarefaction?

    • A. A region where particles are close together
    • B. A region where particles are spread apart
    • C. The height of the wave
    • D. The speed of the wave

Quiz