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What is basic cause of refraction?
Refraction occurs when light passes from one medium to another with a different optical density, causing a change in the speed of light. This change in speed results in bending of the light waves, leading to the phenomenon of refraction.
How does a change in speed cause a wave to change direction?
When a wave travels from one medium to another with a different speed, it can change direction due to refraction. Refraction is the bending of a wave's path as it passes through different mediums at an angle, causing its speed to change. This change in speed causes the wave to bend towards or away from the normal line at the interface.
What characteristic must a new medium have to cause refraction?
A material must have a different optical density or refractive index than the medium it enters in order to cause refraction. Refraction occurs when light waves change speed as they pass from one medium to another, causing them to bend. The degree of bending depends on the difference in refractive index between the two mediums.
How does absorption reflection and refraction change the movement of P waves?
Absorption of P waves weakens them, causing them to lose energy and amplitude as they travel through the Earth. Reflection of P waves can redirect their path and cause them to bounce off boundaries between different materials. Refraction of P waves can change their speed and direction as they pass through materials with different densities, causing them to bend.
How do absorption reflection and refraction change the movement of P waves?
P waves can be absorbed, reflected, and refracted as they pass through different layers of the Earth. Absorption can weaken the P wave as it travels through the medium, reflection can change its direction when it encounters a boundary between materials of different densities, and refraction can cause the wave to bend as it moves through materials with varying speeds.
