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Physics test review

QuestionAnswer
When walking into a dimly lit room, the cones in your eyes help you find your way around. False, rods.
When light enters your eye, it focuses on the iris. False, retina.
When light strikes a transparent material, most of the light is absorbed or reflected. False, opaque.
If white light passes through a red filter, most of the red wavelengths are absorbed. False, transmitted.
Refraction occurs when a wave strikes an object and bounces off. False, reflection.
The longest wavelengths of visible light are red. True.
Pigment is a colored material that absorbs some colors and reflects others. True.
Fluorescent light is produced by heat. False, incandescent.
An illuminated object, such as the sun, emits light. False, luminous.
Regular reflection is the reflection of light from a rough surface. False, diffuse reflection.
Eyeglasses, binoculars, and cameras take advantage of the principles of reflection. False, refraction.
The angle at which light strikes the surface is the same as the angle of which it is reflected. True.
An apple is red because it absorbs red light. False, reflects.
If light waves change speed when they pass from one medium into another, the light will be ___. Refracted.
The color ___ is produced by blending the three primary pigments. Black.
If the muscles in a person's irises are damaged, how is his or her eyesight directly affected? The person is not able to regulate the amount of light that enters the eye.
Any smooth surface that reflects light to form an image is an ___. Mirror.
Optical fibers rely on ___ for their efficiency. Total internal reflection.
The color ___ is produced by blending the three primary colors of light. White.
Light of one wavelength that travels with its crests and troughs aligned is ___. Coherent light.
Light is refracted and spread out by a ___. Concave lens.
The primary light colors are ___. Red, blue and green.
In figure 31-3, through which structure does light first enter the eye? Cornea.
Lasers can be part of all the following except ___. Wall clock.
Plastic wrap is ___. Transparent.
An image of a distant object produced by the refraction of light through air layers of different densities is ___. Mirage.
___ are thick in the middle and thin at the edges. Convex lenses.
Waves vibrate in only one direction in ___. Polarized light.
Reflection of light waves from a smooth surface is ___. Regular reflection.
Created by: AmberGenson
 

 



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