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|What happens to light waves when they are returned from a mirror's surface?
|The waves are reflected.
|What happens when light waves hit a transparent medium, like water, at an angle?
|The direction of the wave changes and the wave is refracted.
|What usually happens when waves hit a transparent medium?
|Waves are partly reflected and partly refracted
|What is the bouncing back of a particle or wave that strikes a boundary b/t two media?
|What happens when a wave is totally reflected?
|All the energy bounces back and the second medium must be very rigid.
|What happens when waves are partially reflected?
|Some of the wave's energy bounces back, but some moves into the new medium. The second medium is less rigid.
|What is important to remember about metals and light waves?
|Metal surfaces are rigid to light waves, light energy is reflected back and make metals shiny, and they contain all frequencies of visible light
|What materials are less rigid than metals to light waves?
|water and glass
|What happens when light shines perpendicularly on the surface of still water?
|2% of its energy is reflected and the rest is transmitted.
|What happens when light strikes glass perpendicularly?
|4% of the energy is reflected and except for a slight losses, the rest is transmitted.
|What do you call a light wave that strikes a boundary?
|an incident wave
|How is a light wave that strikes a boundary represented?
|Its path is drawn as a straight line or arrow called an incident ray
|What is a light wave that bounces off a boundary called?
|A reflected wave
|What is the line called that is drawn perpendicular to the point where the incident ray?
|What is the angle called that is formed b/t the incident ray and the normal?
|Angle of Incidence
|What is the angle called that is formed b/t the reflected ray and the normal?
|Angle of Reflection
|The Angle of Incidence and the Angle of Reflection are equal; this fact is referred to as the
|Law of Reflection