Question

a point absorber is a device used to capture the energy of ocean waves. it floats on the surface of the ocean and uses the rise and fall of the buoy on the ocean waves to generate electricity. which wave characteristic is directly used by the device to generate electricity? frequency wavelength speed amplitude

Explanation:

The amplitude of a wave is related to its energy. Ocean waves with higher amplitude carry more energy. A point absorber uses the rise and fall (motion which is related to the amplitude - as larger amplitude means more up - down movement) of the buoy on ocean waves. The greater the amplitude of the wave, the more the buoy moves, and the more energy can be captured to generate electricity. The speed, wavelength, and frequency of the wave are not directly the characteristic that the device uses in the most straightforward way for energy capture as described in the context of the point - absorber's basic operation (using the buoy's motion which is amplitude - related).

Answer:

amplitude