To find:
Why can't low amplitude sounds travel for long distance.
Step-by-step explanation:
The sound is a wave that carries energy from one point in the medium to the other. The energy of the sound waves depends on the amplitude. That is the energies of the wave are directly proportional to the amplitude of the wave.
Thus low amplitude waves have lower energy. And this energy is dissipated quickly. And that is why low amplitude waves are heard only over a short distance.
Final answer:
The low amplitude sounds can be heard only over a short distance because they have low energy.