I don't know what age your are targeting, but as a Junior HS teacher, I
might suggest a computer program that asks kids from what height one
must drop an elephant next to them so as to make a vibration equal that
of a 1.0 magnitude quake.  Then ask how high for a 2.0 and so on.  Since
the Kinetic Energy is linear with altitude, that might be a real eye
opener.

Bob Avakian
Texas


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