UEN Security Office
Technical Services Support Center (TSSC)
Eccles Broadcast Center
101 Wasatch Drive
Salt Lake City, UT 84112
(801) 585-6105 (fax)
1 class periods of 45 minutes each
Students will learn about refraction of light by experimenting with various objects.
Refraction is one of many characteristics of light. Usually light travels in straight lines, but it bends as it passes from a medium of one density to a medium of differing density. Light bends because it travels at different speeds through mediums of differing densities. Light, as it moves through air, travels 186,000 miles per second. However, the denser the material that light is traveling through, the slower the speed will be. Light passes a lot slower through water, for example. Refraction of light can be seen by using a prism. The white light is separated into all of the colors of the rainbow. Mirages are also caused by refraction of light.
The book Hatchet, mentioned in the beginning of the lesson, is about a boy named Brian who becomes stranded in the Canadian wilderness when the plane he is on crashes. The section that is used in this lesson is about Brian trying to fish and realizing that the fish are not where he thinks they are in the lake because of refraction.
Part 1: Class Demonstration
Part 2: Learning Centers
Materials: a penny, an opaque container, and water.
Spoon in a Glass
Materials: A spoon, a clear glass, and some water.
Materials: A piece of paper, a pencil, a clear glass, and water.
Use the Science Journal Rubric to assess student journal entries.
Original Lesson Plan by: Lisa Coltrin