Whose fault is it anyway?
Eric Muller 1993 The Science Teacher v60 no8 p28-33
This game has students simulate the propagation of S and P waves after an earthquake and to use the lag between these to determine where in the simulation the earthquake occurred. Students stand in lines holding hands with those at the ends working as seismometers to record how long it takes P- and S-waves to reach them. The students between them propagate the waves as handshakes, allowing an extra two-second lag for S-waves. The student who originated the waves, representing the earthquake is known only to him- or herself and the instructor until the others can figure out who it is based on the lag between the S- and P-waves, which increases with the number of people between the earthquake and the seismometer.