* Frequency: Frequency represents the number of wave crests passing a point per second. This property is determined by the source of the light and doesn't change as the light travels through different mediums.
* Speed: The speed of light changes as it moves from air to water. Light travels slower in water than in air.
* Wavelength: The wavelength of light is related to its speed and frequency by the equation: speed = wavelength * frequency. Since the speed changes and the frequency remains constant, the wavelength must also change.
* Amplitude: Amplitude represents the intensity of the light wave (how bright it is). While the intensity of light can be affected by factors like scattering and absorption, the change in medium itself doesn't directly alter the amplitude.
In summary: When light enters water, its speed and wavelength decrease, but its frequency remains the same.
