Its speed.
Speed
Linght can travel very fast, because it has both wave and particle properties and it moves in stright line.
Energy moves forward in a wave.
the upper part of the wave moves faster
Its speed.
Speed
a sweeping motion
Linght can travel very fast, because it has both wave and particle properties and it moves in stright line.
Such a wave is called a longitudinal wave.
Energy moves forward in a wave.
The energy of a wave moves forward with the wave. A wave is moving energy, and the wave carries it in the direction of propagation.
the upper part of the wave moves faster
Water moves up and down as the wave moves horizontally. The website below has examples of transverse waves.
The fastest seismic wave that also moves back and forth is the P-wave.
Compression wave
A wave that represents the direction in the direction the wave moves.