A PERIODIC DISTURBANCE IN A SOLID, LIQUID, OR A GAS AS ENERGY IS TRANSMITTED THROUGH A MEDIUM

LONGITUDAL AND TRANsVERSE.

LONGITUDAL- EARTHQUAKE TRANSVERSE- STRING VIBRATING

THE BOUNCING BACK OF A LIGHT, SOUND, OR HEAT WHEN THE RAY HITS A SURFACE THAT IT DOES NOT GO THROUGH.

THE BENDING OF A WAVEFRING AS THE WAVEFRONT PASSES BETWEEN TWO SUBSTANCES IN WHICH THE SPEED OF THE SINGLE WAVE.

A CHANGE IN THE DIRECTION OF A WAVE WHEN THE WAVE FINDS AN OBSSTACLE OF AN EDGE, SUCH AS AN OPENING