* Frequency: Frequency is a fundamental property of light that determines its color. It 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.
* Wavelength: Wavelength is the distance between two consecutive wave crests. When light enters water, its speed decreases because water is denser than air. Since the frequency remains constant, the wavelength has to decrease to maintain the relationship between speed, frequency, and wavelength (speed = frequency x wavelength).
* Speed: The speed of light is highest in a vacuum and decreases as it travels through denser mediums. Water is denser than air, so light travels slower in water.
In summary:
* Frequency: Stays the same
* Wavelength: Decreases
* Speed: Decreases
This change in wavelength and speed is what causes light to bend (refract) when it passes from air to water, a phenomenon you see when you look at a straw in a glass of water.
