Physics
Grade-8
Easy
Question
Elephants use _____ to communicate with each other.
- Their normal voice
- Audible frequency sounds
- Ultrasound
- Infrasound
Hint:
Infrasound
The correct answer is: Infrasound
- Sounds with frequencies below 20Hz are called infrasound.
- Elephants use infrasound to communicate with each other.
- So, the correct option is d.
- The infrasound frequencies are good for long distance communication because they travel well through objects instead of being reflected.
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