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Lab #22.5
Heat: Chapter 22
Canned Heat: Heating Up
Purpose
In this experiment, you will
compare the ability of different
surfaces to absorb thermal
radiation.
Discussion
Does the color of a surface make
a difference in how well it
absorbs thermal radiation? If
so, how? The answer to these
questions could help you decide
what to wear on a hot, sunny day
and what color to paint your
house if you live in a hot,
sunny climate. In this
experiment, we will compare the
thermal absorption ability of
three surfaces: silver, black,
and white. We’ll do this by
filling cans with these surfaces
with water, then exposing the
cans to heat lamps. We’ll
measure the temperature of the
water in each of the cans while
they’re being exposed to the
heat and see if there’s a
difference in the rate at which
the temperatures increase.
Required
Equipment
Heat Lamp and
Base, Radiation Cans (Silver,
Black, White), Thermometer, Cold
Water, Paper Towel, Graph Paper.
Download
Student Worksheet
Teacher Notes
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