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Studying Suggestions for Refraction Quiz #1 

The first Refraction quiz will be on Thursday, October 25. The quiz will be a one-page quiz, covering both sides of a single sheet of paper. Bring your centimeter ruler/protractor and be ready to think and diagram. Students can expect the following concepts, skills, and problem-types to be assessed on this quiz:

  1. Define refraction and describe the cause of refraction; identify and describe the one condition in which light will move from one medium to another and not refract at the boundary; define the angle of incidence and the angle of refraction. (MOP, sublevels 1 and 2)

    || Refraction and Sight || The Cause of Refraction || The Secret of the Archer Fish ||

     

  2. Identify and use the relationship between light speed and the index of refraction. (MOP, sublevel 3)

    || Optical Density and Light Speed ||

     

  3. Use information about the two media on each side of the boundary (e.g., information about the optical density of, the index of refraction of or the speed of light in the two medium) to predict whether a light ray will bend towards or away from the normal at the boundary of the two medium; to construct a refracted ray to express this understanding.(MOP, sublevel 3)

    || Optical Density and Light Speed || The Direction of Bending ||

     

  4. Use Snell's law to determine the angle of refraction at a boundary between two medium (if given the indices of refraction and the angle of incidence); similarly, use Snell's law to solve for the fourth parameter if given values of the other three parameters in the equation; interpret the results of such calculations by drawing the refracted ray at the appropriate angle; to combine an understanding of the physics of refraction with an understanding of trigonometric and geometric relationships.(MOP, sublevel 4 and Problem Set B)

    || Angle of Refraction || Snell's Law || Ray Tracing and Problem-Solving

     

  5. Use Snell's Law and the path of light through a material to determine the index of refraction of an unknown material. (MOP, sublevel 4)

    || Determination of n Values ||

     

  6. Define total internal reflection; decribe the conditions under which it occurs; define the critical angle and to calculate the critical angle for any combination of media; to interpret critical angle calculations in order to explain what would happen to light when incident towards a boundary at a given angle (greater than, equal to, or less than the critical angle). (MOP, sublevels 5 and 6)

    || Total Internal Reflection || The Critical Angle ||

     

     

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E-mail: Tom Henderson || Last update: 10/23/2001