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15 questions ppt
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Question | Answer |
---|---|
What is a reflectice wave? | A wave that travels through a mirror but is returnedby the mirrors surface. |
What is a refracted wave? | When a wave strikes the surface of a transparent medium, like water, at an angle, their direction changes. |
What is reflection? | The bouncing back of a particule or wave tht strikes a bournary between two media. |
Sound waves are what? | Partially reflected. |
What does waves energy do? | Some bounces back and some move into the new medium. |
The second medium must be what? | Less rigid. |
Light energy does not what? | Propagate into the metal, but instead returned in a refleted wave. |
Why is metals like silver and aluminum so shiny? | Because they reflect almost all the frequencies of visible light. |
The law of reflection states what? | The angle of incidence and the angle of reflection are equal to each other. |
Whats an incident wave? | A light wave that strikes a boundary. |
Whats an reflected wave? | A light wave that bounces off a boundary. |
Whats a normal? | A line drawn perpendicular to the poinnt where the incidence ray strikes the barrier. |
Whats the angle of incidence? | The angle formed between the incidence ray and the normal. |
Whats the angle of reflection? | The angle formed between the reflected ray and the normal. |
Plane mirrors do what? | Produce only virtual images |