A bucket of water is pushed from left to right with increasing speed across a horizontal
surface. Consider the pressure at two points
lat the same level in the water.

The magnets would be | n s | and | s n|

Transfer of electrons. hope it !

Ithink the answer is fusion 

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.