Question

uses of different kinds of waves in communication devices (sonar and radar)​

Answer 1

Answer:

Radar and lidar (LY-dahr) rely on echoes, too. Only they don't use sound waves. Instead, these two technologies use radio waves or light waves, respectively. Both are examples of electromagnetic radiation.

A SONAR (sound navigation and ranging) uses ultrasonic waves to detect and locate objects under water.

Sonar uses sound waves to 'see' in the water.

NOAA scientists primarily use sonar to develop nautical charts, locate underwater hazards to navigation, search for and map objects on the seafloor such as shipwrecks, and map the seafloor itself. There are two types of sonar—active and passive.

Answer 2

Answer:

Radar is a detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain.

Sonar, short for Sound Navigation and Ranging, is helpful for exploring and mapping the ocean because sound waves travel farther in the water than do radar and light waves.Explanation: