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Required in-class time for activities
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Activities

Kinesthetic

5 min.

Time Dilation Light Clock Skit
Students act out the classic light clock scenario for deriving time dilation.
A 100W light bulb is left burning inside a Carnot refridgerator that draws 100W. Can the refridgerator cool below room temperature?

Small Group Activity

30 min.

Mass is not Conserved

Groups are asked to analyze the following standard problem:

Two identical lumps of clay of (rest) mass m collide head on, with each moving at 3/5 the speed of light. What is the mass of the resulting lump of clay?

Small Group Activity

30 min.

Hydrogen emission
In this activity students work out energy level transitions in hydrogen that lead to visible light.