The speed of light in a vacuum
What is 2.998x10^8 m/s
An imaginary line perpendicular to the interface originates at the point of incidence.
What is the normal line?
Sound travels faster through a solid liquid, or gas
Solid
The lower index of refraction is:

What is n2?
The more a medium slows down the speed of light, the higher this value is. What is this thing called?
What is index of refraction?
Formed by the incident ray and the normal line.
What is the angle of incident?
Sound travels faster in colder or warmer temperatures
When light moves from air (n=1.00) to diamond (n=2.42) with an angle of incidence of 60 this is the angle of refraction.
What is 21 degrees?
The angle of refraction
What is 12?
This number indicates the incident angle.

What is number 3?
The light ray that crosses the interface and enters the second medium.
What is the refracted ray?
A solid has a Young's modulus of 1.2 × 10^11 Pa with a density of 6,500kg/m3. What is the speed of sound traveling through this solid?
4296m/s
The angle of incidence in air (n=1.00) if the angle of refraction in the second medium (n=1.30) is 45.
What is 67 degrees?
A common use of total internal reflection in data transmission!!
What is fiber optics?
The angle of incidence
What is 58?
The refracted ray is indicated by this number

What is number 7?
The direction the light ray will bend when the index of refraction (n) is greater in the second medium.
What is toward the normal?
When a light ray moves from air to a transparent medium with an angle of incidence of 50 and an angle of refraction of 40, this is the index of refraction of the transparent medium.
What is 1.2?
The speed of light when it travels through glass (n=1.50)?
What is 2.0 x 108 m/s?
Determine the angle of refraction
What is 27 degrees?
The normal line is what number? 
What is number 8?
The angle of incidence is indicated by number

What is 3?
Sound travels through a liquid with a bulk modulus of 2.3x10^9 and a density of 1,200Kg/m3. The same sound travels through a solid with a Young's modulus of 2.45x10^11 and a density of 5,600Kg/m3. What is the difference in speed?
What is 5,230m/s
A flashlight 12cm away from a convex lens has light rays converge on the other side and produce an image of the lightbulb at 24cm. What is the focal length?
What is number 8 cm?
A flashlight is put in front of a convex lens, which has light rays converge on the other side and produce an image of the lightbulb at 24cm. The focal length is 8cm. What is the distance the flashlight is away from the lens?
what is 12cm?
The angle of incidence
What is 45 degrees?