Ch. 29 Vocabulay Word Scramble
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| Question | Answer |
| the bouncing back of a particle or wave that srikes the boundary between two media. | reflection |
| a line perpendicular to a surface | normal |
| angle between an incident ray and the normal to a surface | angle of incidence |
| angle between a reflected ray and the normal to a surface | angle of reflection |
| the angle of incidence for a wave that strikes the surface is equl to the angle of reflection. This is true for both partially ad totally reflected waves. | law of reflection |
| the reflection of waves in many directions from a rough surface. | diffuse reflection |
| an image formed though reflection or rarefraction that can be seen by an observer but cannot be projected on a screen because light from the object does not actually come to focus. | virtual image |
| persistance of a sound, as in an echo, due to multiple reflections | reverbation |
| the change in direction of a wave as it crossses the boundary between two media in which the wave travels at different speeds. | refraction |
| the crest, trough, or any continuous portion of a 2D or 3D wave in which the vibrations are all the same way at the same time | wave front |
| the floating image that appears in the distance and is due to the refraction of light in Earth's atmosphere | mirage |
| the seperation of light into colors arranged according to their frequency, by the interaction with a prism or defration grading, for example | dispersion |
| the minimum angle of incidence for which the light ray is totally reflected in the medium | critical angle |
| the 100% reflection(with no transmition) of light that strikes a boundry between two media at an angle greater than the critical angle | total internal reflection |
| a transparent fiber, usually of glass or plastic that can transmit light down it's length by means of total internal reflection | optical fiber |
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13_bbetlejewski
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