Hertz (Hz) is the unit of frequency, which measures the number of cycles per second.
Amplitude is a measure of the maximum displacement of a wave from its equilibrium position. The unit of amplitude depends on the type of wave:
* For sound waves: Amplitude is often measured in decibels (dB), which is a logarithmic scale that compares the sound intensity to a reference level.
* For electromagnetic waves: Amplitude is usually measured in volts (V) or amperes (A), depending on whether it's the electric field or magnetic field amplitude.
* For mechanical waves: The unit of amplitude depends on the type of wave and the quantity being measured (e.g., displacement, pressure, etc.).
In summary: Hertz is the unit for frequency, while amplitude is measured in various units depending on the specific type of wave.