Here's why:
* Energy and Amplitude: The energy carried by a wave is related to the square of its amplitude. This means that a wave with twice the amplitude carries four times the energy.
* Medium's Properties: The specific relationship between amplitude and energy also depends on the properties of the medium the wave travels through. For example, a sound wave in air will have a different energy-amplitude relationship than a light wave traveling through a vacuum.
In simpler terms:
Think of a wave like a ripple in a pond. A bigger ripple (higher amplitude) means more water molecules were disturbed, requiring more energy to create it. The same principle applies to other waves.
Important Note: While amplitude is directly related to the energy transferred, it's not the *only* factor. Other factors, like frequency and wavelength, also play a role in determining the total energy of a wave.