Wave and energy

Question

點解，take水波為例，點解一個particle喺water wave上面只係上下oscillate，就可以將能量傳出去呢? 我明一個particle oscillates，就會帶動第二個oscillates，但係，點解嘅? 簡單嚟講，我係想知個principle...
thank you so much~~~

Answer 1

I think you are referring to water ripples (which is different from sea waves that occurs in an ocean),

Ripples are viscocity waves. Water surface behaves like an elastic skin. The water molecules on this [skin] are holding each other by intermolecular forces. When these molecules are set into vibration, they would transmit the vibrational force, and hence the kinetic energy they carry, to other molecules on the [skin]. This is how water ripples propagate.