You are standing at the edge of a canyon. You shout and hear your own voice echoing back to you. What does this scenario demonstrate about the relationship among the rate of vibration, the medium through which vibrations travel, sound, and hearing?
The louder the shout, the faster the sound travels through the air.
The echo is heard before the original shout due to the rate of vibration.
The sound travels through the air, reflects off the canyon wall, and is heard as an echo.
The rate of vibration affects the speed at which sound travels through the air.