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Sound — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceSound1 Mark
MCQ
Elephants communicate with:
  • A
    Sonic sound
  • B
    Infrasonic sound
  • C
    Ultrasonic sound
  • D
    None of these
✓

Answer

  1. Infrasonic sound

Explanation:

Elephants can communicate using very low frequency sounds, with pitches below the range of human hearing. These low frequency sounds(frequency less than 20 Hz), termed infrasonic sounds, can travel several kilometers, and provide elephants with a private communication channel that plays an important role in elephants complex social life. Their frequencies are as low as the lowest notes of a pipe organ.

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