Save guides, add subjects and pick up where you left off with your BBC account. Waves transfer energy from one place to another. Light from the Sun travels through space and through the atmosphere ...

A transverse wave is one in which the vibrations of the ... Peak - the highest point above the rest position. Trough - the lowest point below the rest position. Amplitude - the maximum ...

But the waves we've mainly been talking about so far are transverse waves -- ones in which ... it will still be reflected -- but this time, as a trough. The wave was inverted.