sonar
because the waves are sent back to the machine as sound
When the sound waves are reflected, the result in the producing of an echo.
ultrasound
An echo.
echo
because the waves are sent back to the machine as sound
When the sound waves are reflected, the result in the producing of an echo.
Produced by reflected sound waves over 17m away?
ultrasound
echo!
what is the name given to the reflected sound waves in a cave or an empty hall
what machine can be used to measure sound waves
An echo.
echo
A reflected sound waves is called an echo.
9000
because of science