Question

bats use which types of waves

Answer 1

Bat used ultrasonic waves.
They used ultrasonic waves to detect their prey.They can detect frequencies beyond 100 kHz, possibly up to 200 kHz.

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Answer 2

Answer:

The sound waves produced by the bats are ultrasonic waves. Bats emit sounds at typically 2 or 3 times higher pitch than we can hear. Sounds above human hearing are usually called ultrasonic.