From: Paul Doherty (pauld@exploratorium.edu)
Date: Sun Dec 12 2004 - 15:37:36 PST
From: "Paul Doherty" <pauld@exploratorium.edu> Subject: Re: pinhole Heat and Temp. lesson ideas?? Date: Sun, 12 Dec 2004 15:37:36 -0800 Message-ID: <web-7703791@exploratorium.edu>
Burt's activity reminded me of another.
Have the students arrange themselves in a line from
coldest hand temperature to hottest. (They compare by
shaking hands.)
Then have the hottes handed student go down the line
shaking hands with all the rest and then the coldest
handed student do the same.
You can then have the cold handed person and warm handed
person shake hands with the person in the middle of the
line. One will feel the middle person's hands as hot, the
other as cold.
The students will be amazed at the range of hand
temperatures.
At an adult party after a break in which people can drink
or smoke have them do the line up again. Those who drink
alcohol warm up their hands due to vasodilation , those
who smoke cool them down do to vasoconstriction. So those
people change places in the line. An interesting lesson on
the affect of chemicals on the body.
Which leads to the question what happens to someone who
drinks and smokes?
Paul D
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