9.2 - Sound Waves On The Move

Question 1

Sonar

Answer 1

is used on ships to map the ocean floor, and locate underwater objects such as shipwrecks and submarines.
The distance from the ocean floor or to an object can be calculated by measuring the time taken for the echo to return to the ship (high-frequency sound)

Question 2

Echolocation

Answer 2

use of sound to locate objects by detecting echoes

Eg. Whales, dolphins, porpoises and bats use echolocation to sense their surroundings.

Question 3

Ultrasound

Answer 3

sound with frequencies too high for humans to hear