Sonar
Sonar uses echoes to locate objects by bouncing sound waves off them and detecting the echoes.
dolphins bats porpoises and whales
SONAR (sound navigation and ranging)
Echo
A fishing boat using sonar to locate fish is employing reflection. The technique that uses sound propagation to detect objects under the water.
most animals are really good at hearing so they listen very carefully to see what they can hear
it uses optical technology
Ultrasound uses sound. It was developed with the same principles of sonar used at sea. When sound passes through the body it produces echoes that are able to identify distance, size and the shape of objects.
sonar
radar
Skyscout is manufactured by the company Celestron. It is a computerized, handheld telescope that uses GPS technology to locate stars and constellations in the sky.
radar