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Re: [Phys-l] heat labs?




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-----Original Message-----
From: Richard Taylor <rtaylor.physics@tx.rr.com>
To: Forum for Physics Educators <phys-l@carnot.physics.buffalo.edu>
Date: Sat, 25 Aug 2007 08:25:13 -0500
Subject: Re: [Phys-l] heat labs?

You might try this:

http://home.hockaday.org/HockadayNet/Academic/physics/MPPhysics/labs/
bulbtemp.html

It uses a 15 watt light bulb for the immersion heater. With a known
power, you don't have to use volts and amps.

There's the added benefit of it seeming really scary.

Richard
--
Richard L. Taylor
The Hockaday School
Dallas, TX 75223
http://home.hockaday.org/HockadayNet/academic/physics/



On Fri, Aug 24, 2007, at 1:19 PM, Anthony Lapinski wrote:

As our school year begins, I am looking for a good lab to do for my
HEAT
topic. I teach physics in HIGH SCHOOL, and all of my labs are LOW
TECH.
I've had some difficulty finding good labs to perform that are
different
from the ones typically done in chemistry:

heat ice to boiling, then make a phase diagram
determine the specific heat of a metal

I don't want the labs to be too easy, like mixing hot/cold water and
predict final temperature.

I have tried the burning food lab, where you burn a peanut under a
beaker
of water to determine the energy (calorie) content of various
foods, then
compare it to the nutrition label on package. Interesting consumer
physics, but very messy and the results are poor due to all the
heat loss.

I read an experiment somewhere (source?) about an immersion heater
placed
in water. This deals with the conversion of electric energy to heat
energy. This might work, but I teach heat before electricity. Has
anyone
ever tried this lab? Do students like it, and are the results good?

Are there any other types of heat lab activities (quantitative or
qualitative) appropriate for this age level.? I would appreciate any
suggestions. Thanks in advance!

_______________________________________________
Forum for Physics Educators
Phys-l@carnot.physics.buffalo.edu
https://carnot.physics.buffalo.edu/mailman/listinfo/phys-l

_______________________________________________
Forum for Physics Educators
Phys-l@carnot.physics.buffalo.edu
https://carnot.physics.buffalo.edu/mailman/listinfo/phys-l


Prof. Eric T. Lane eric-lane@utc.edu
Physics Dept. 2352 423-265-7804
The University of Tennessee at Chattanooga 37403-2409