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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 |