Question

Give two practical applications of reflection of sound waves.

Answer 1

Hint: To get this problem solved you need to write two processes in which sound waves are used. There are many applications like parking sensor, radar, radiology, sonar, echo.

Complete Step-by-Step solution:
1. Sonar:
SONAR uses sound propagation to help ships and submarines navigate oceans and oceans. Sonar can also be used to explore the depths of the ocean and the various objects found beneath the sea. Another type of application is in medicine, called ultrasound medical imaging. This is also used to track barriers / animals under the water.

2. Echo:
When we need to find the distance between two things, we can find them with the aid of the echo. We're going to use the formula of speed = distance over time, so we need to calculate time with the speed we already know. We can measure the distance, then.

3. Parking sensor:
Parking sensor systems use ultrasonic proximity detectors embedded in front and/or rear bumpers to measure distances to nearby low-level objects. The sensors measure the time taken to reflect each sound pulse back to the receiver. Based on the speed of the vehicle and the distance to the hazard, the device may alert the driver of the possibility of collision by visual and/or audible means. The input from the driver would usually show the position and proximity of the obstacle. Warnings are disabled when the car reaches a certain speed and can be turned off in conditions such as stop-and-go traffic.

4. Radar:
Radar is an object-detection device that uses electromagnetic waves such as radio waves to determine the location, distance, direction, or speed of moving and fixed objects such as aircraft , ships, satellites, missiles, motor vehicles, weather patterns, and terrain. The radar dish or antenna transmits bursts of radio waves or microwaves that bounce off any object in its direction. The object returns a small part of the wave energy to a dish or antenna that is usually located at the same location as the transmitter.

Note – The applications to the reflection of sound waves can only be learnt students can also try to think about different applications. They can also do something creative and can make new applications with their creative minds.