Sonar
SONAR (SOund Navigation And Ranging)
Any sound waves that happen to be propagating through the water will bounceoff of any objects that are there. No device is required to make that happen.A system that intentionally generates sound waves underwater, and then receivesand analyzes those that return after bouncing off of something in the water, is aSONAR system.
When a sound wave bounces off a surface, it is called an echo.
A device for detecting underwater objects is typically called a sonar device. Sonar uses sound waves to detect and locate objects underwater by measuring the time it takes for the sound waves to bounce off the object and return to the device.
When a sound bounces off a surface it's called an echo. An echo is the reflection of sound waves off surfaces.
The use sound to detect what is around them. The echolocation sound bounces off objects and then back to the bat.
they probably would use a sonar which is a device that bounces sound waves off under water objects and then records the echoes of these sound waves. =]
A really big iPhone
The sound wave that bounces off a surface is called an echo. It is created when sound waves reflect off a surface and return to the listener's ear after a noticeable delay.
This is called reflection of sound. It's like a sound wave bouncing on a trampoline.
Sound is a pressure wave. Objects that "allow" sound to travel through them could be called wave guides.
This is echo.