This is my friend and me at Doris Dukes after jumping off of the rock wall. The vibrations were sent through the water from the impact of our landing. The vibrations created waves as the energy travels through the water. The molecules do not actually move forward but merely move up and down. The amplitude can be measured by finding the displacement from the equilibrium position. The frequency is the number of vibrations per sec. We could have increased the amplitude and frequency by making a larger splash to cover more surface area. The same method of measurement is used to find the wave height on our shores.