i. The sound frequencies above 20,000 Hz. ii. The medium through which sound is most clearly propagated.

Question

Name the following:

i. The sound frequencies above 20,000 Hz.

ii. The medium through which sound is most clearly propagated.

iii. The range of frequency in which humans can hear sound.

iv. The sound level physically painful to humans.

v. The technique used by bats to find their way.

Answer 1

i. ultrasonic

ii. solids

iii. 20 – 20,000 Hz

iv. above 100 dB

v. echolocation