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Ch. 29 2nd set phy.

physics

QuestionAnswer
refraction is the bending of a wave as it crosses the boundary between 2 media at an angle
water travels faster in deep water compared to shallow water
each point along a wave front the wave is moving.. perpendicular to the wave front
sound refraction occurs when.. uneven winds or when sound travels through uneven temperature
sound travels faster in warmer air
light travels faster in.. air and slower in water
when light slows down ... it bends toward the normal
a mirage is caused by.. hot air near the ground refracts the light in earth's atmosphere
dispersion is seperation of light into a range of colors according to their frequencies
how do you get a rainbow? water droplets must be on one part of the sky and the sun on the other side. Your back must be turned toward the sun to be able to see it.
critical angle is the angle of incidence at which the light is refracted at an angle of 90 degrees with respect to the normal
the critical angle for glass is about 43 degrees depending on the type of glass
total internal reflection is.. when the angle of incidence is larger than the critical angle
optical fibers use.. a series of total internal reflection useful for communication, mechanics, and physicians
why do diamonds sparkle? light that enters the cut gemstone is totally internally reflected without losing intensity and produces a wide array of colors.
Created by: ksondermann