Mathematics · Sound Waves
The _______ is produced by tectonic plates in earthquakes before the main shock wave, which can be heard by certain sensitive animals.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1ultrasound with frequencies above 20 kHz
- 2infrasound with frequencies below 20 Hz✓
- 3ultrasound with frequencies below 20 kHz
- 4infrasound with frequencies above 20 Hz
Correct answer
infrasound with frequencies below 20 Hz
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