Speed increases, minimum distance increases
Answer: Speed increases, minimum distance increases.
Speed: Higher temperature = faster air molecules = faster sound travel.
Echo Distance: Because sound is traveling faster, it covers more ground in the 0.1 seconds required for the human ear to distinguish an echo. Therefore, the reflecting surface must be further away.
Example: At 0°C, the minimum distance for an echo is about 16.5 meters. At 25°C, it increases to about 17.3 meters.
Important Questions from Sound
Which one among the following components is used as an amplifying device?
- What is required for the generation of a sound wave?
Which phenomenon is responsible for the echo of sound wave?
We hear an echo due to
Quality of a musical note depends on
