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Science exam 5
Optical Systems
| Question | Answer |
|---|---|
| Transparent | light passes through freely |
| translucent | light passes through and scatteres (some is absorbed or reflected) |
| opaque | no light can pass through, all light is absorbed or reflected |
| shadows | bigger if object is closer to light sorce, smaller if object is farther from light sorce |
| normal | line drawn at right angle to a soldid barrier |
| incident ray | incoming light ray |
| reflected ray | light ray that bounces off |
| angle of incidence | angle between incident ray and the normal, labelled with an i |
| angle of reflection | angle bvetween reflected ray and the normal, labelled with an r |
| law of reflection | the angle of reflection equals the angle of incidence |
| refraction | bending of a wave when it passes from one medium to another |
| light passing through air to water (refraction)bends ___________the normal | slows down and bends toward |
| light passing through water to air (refraction) bends ___________ the normal | speeds up and bends away from |
| angle of refraction | angle between the refracted ray and the normal, labelled with an R |
| when you look at an object under water, it appears to be _______ where it really is | above |
| light can also be refracted in air, resulting in _________ | mirages |