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unit 18/ch 13 study

chapter 13 study guide exam

QuestionAnswer
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.
Created by: Katwill678