¿Cuál es la intensidad del sonido de un piar de un pollito de pájaro?

Because the sun is the biggest and if the sun orbits the earth we will be dead probably

Sounds propagates through some kind of medium. usually it's air, but it goes just as well through solid objects like walls, windows etc. a soundwave will compress the (air)molecules in front of it, and if this increased density wave hits your ears, you register it as sound. solid objects like walls are a lot denser than air, this means that they will damp a wave, but also carry it easier.