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unit 18/ch 13 study
chapter 13 study guide exam
| Question | Answer |
|---|---|
| Define opaque. Give an example. | Absorbs or reflects all light and does not transmit any light; examples can be anything you cannot see through at all such as walls, wood, aluminum foil. |
| Define transparent. Give an example. | Transmits almost all light striking it so that objects can be clearly seen through it; example can be anything you can see through such as glass, plastic wrap, sandwich baggies. |
| Define translucent. Give an example. | Transmits some light, but not enough to see objects clearly through it; examples can be things that let some light through, but are not clear such as frosted glass, wax paper, shower curtains. |
| Define reflection. | Occurs when a wave bounces off a surface. |
| Rough surfaces give a _______________ reflection. Smooth surfaces give a _________________ reflection. | diffuse, regular |
| State the law of reflection: | The angle at which a wave strikes a surface is equal to the angle at which it is reflected. |
| When waves change speed when moving from one medium to another, the wave is | Refracted |
| Define mirage. | Image of a distant object produced by the refraction of light through air layers of different densities. |
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Katwill678
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