1. Speed: This is the most significant change. The speed of a wave depends on the properties of the medium it's traveling through.
* Denser mediums: Waves typically slow down in denser mediums. This is because particles in denser mediums are closer together, leading to more interactions and a slower transmission of energy.
* Less dense mediums: Waves typically speed up in less dense mediums.
2. Wavelength: The wavelength of a wave is the distance between two successive crests or troughs. It's directly related to the speed of the wave:
* Shorter wavelength: When a wave slows down, its wavelength becomes shorter.
* Longer wavelength: When a wave speeds up, its wavelength becomes longer.
3. Frequency: This is the number of waves passing a point per second. Frequency remains constant when a wave transitions between mediums. This is because frequency is determined by the source of the wave, not the medium it's traveling through.
4. Direction: The direction of the wave can also change. This is called refraction, and it happens when a wave enters a medium at an angle. The change in speed causes the wave to bend.
Example:
Imagine a light wave traveling from air (less dense) to water (denser).
* Speed: The light wave slows down in water.
* Wavelength: The wavelength of the light wave becomes shorter in water.
* Frequency: The frequency remains the same.
* Direction: The light wave bends towards the normal (an imaginary line perpendicular to the surface of the water) due to refraction.
Summary:
* Speed: Changes
* Wavelength: Changes
* Frequency: Stays the same
* Direction: Can change (refraction)
The exact changes in speed, wavelength, and direction depend on the specific properties of the two mediums and the angle at which the wave enters the new medium.
