Headphone earpieces can produce sounds that seem very loud to the listener. However, a person standing a meter away may not even be able to hear those same sounds. Why are these sounds so much quieter a short distance away?
Group of answer choices
The amplitude of the waves decreases as the sound spreads out and is absorbed by air.
The frequency of the sound is too high to travel a full meter through the air.
The wavelengths of the waves are too short to reach a person standing a meter away.
Sound waves from headphones do not use air as a medium and travel directly into your ear.
1 answer
The correct answer is:
The amplitude of the waves decreases as the sound spreads out and is absorbed by air.
When sound is produced, it radiates outwards in all directions. As the sound waves travel away from the source (in this case, the headphone earpieces), the amplitude of the waves decreases due to the spreading out of the sound energy over a larger area and potential absorption by the air, leading to a reduction in perceived loudness for someone standing farther away.
