Absorbing Heat

Topics: Temperature, Thermodynamics, Heat Pages: 3 (905 words) Published: October 15, 2011
Introduction-
Heat is energy that is warm. Heat energy comes from different energy forms or types like electrical. Heat is also natural, from the sun. Heat transforms by reflecting on something and giving it warmth. The temperatures on the coloured cans will vary because they absorb different amounts of heat. According to the particle theory when an object heats up the particles spread out and move more. Aim-

The aim of this experiment is to test how colour affects the amount of heat being absorbed or emitted. Hypothesis-
I think the black can will be the hottest and I think the white can will be cooler because it looks like a clear and relaxing colour. Method-
1.Fill the cans with 100ml of water. Put on aprons and gather your materials (black can, sliver can, white can, room temperature water, stopwatch, thermometer, 100ml beaker and cardboard box). 2.Fill the cans with water using the beaker and place the thermometers in the cans. Then position them on top of the cardboard box in a sunny position. 3.Draw up your data table and start the stop watch.

4.Carefully lift the thermometer out of the cans every 5 minutes and record the temperatures in your data table. 5.Place the cardboard box and cans inside after 30 mins to measure the cooling down stage. Repeat step 4 every 5 minutes. 6.Once you have recorded all your results, pack up all of the materials that were needed for this experiment.

Materials- for this experiment you will need...
A black can
A silver can
A white can
Room temperature water
Stopwatch
Thermometer
Heat source (heat lamp or sun)
100ml beaker
And a cardboard box

Results-
Make a table and record your results
TimeSilver canBlack canWhite can
0 min22°c24°c23°c
5 min23 ½ °c25°c24°c
10 min24 ½ °c28°c25°c
15 min25°c30°c25°c
20 min26°c31 ½ °c26°c
25 min27°c33 ½ °c27°c
30 min26°c35°c27°c
Time Silver canBlack canWhite can
0 min26°c35°c27°c
5 min27°c33 ½°c27°c...
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