Understanding the Concept
* Sound travels at a speed: Sound travels through air at approximately 343 meters per second (1,125 feet per second).
* Echoes and Distance: An echo is created when sound waves bounce back from a surface. The time it takes for the sound to travel to the surface and back determines the distance.
Calculation
1. Time for one-way travel: Since the echo represents the sound traveling to the wall and back, the time for one-way travel is half the total delay: 2.0 seconds / 2 = 1.0 second
2. Distance Calculation: Multiply the time for one-way travel by the speed of sound: 1.0 second * 343 m/s = 343 meters.
Answer: The distance to the wall of the canyon is approximately 343 meters.