Objective
The aim of this experiment is to find out which method can be used for cooling a soda can beginning from room temperature.
Introduction
This is one of those science fair experiments that will teach you about heat transfer by conduction, convection, radiation and evaporation. You must do some research to find out what these terms mean before you go ahead with your experiment.
Conduction: When heat is transferred from one molecule to the other without the molecules being subjected to mass movement.
Convection: The transfer of heat when mass movement occurs.
Radiation: When heat is given out in the form of waves, visible or invisible.
Evaporation: When liquid molecules turn to vapor, carrying off heat.
There are several science fair experiments based on the above concepts.
If you want to cool a soda can, your best bet would off course be the fridge, but you must know that objects in the refrigerator and the freezer get cooled mostly by convection (and partially by conduction). The air molecules inside your refrigerator are spread over a larger area as compared to liquid molecules. So what about objects placed in close contact with liquid? Liquid is much denser than air and would interact with molecules of objects in contact with them to a greater extent. There is a clue hidden in my last sentence, which will help you later.
Materials
Cans of soda kept at room temperature (12 numbers), digital thermometer, ice cubes, two styrofoam cooling boxes, water, plastic wrap and a timer.
Now amaze yourself by finding out which cooling arrangement was the fastest! Knowing that the freezer is not the quickest way to cool a soda can be quite a revelation to most people.
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If you are excited about this project, your next step would be to download a free copy of "Easy Steps to Award-Winning Science Fair Projects" from the link below right now.
Your next step is to download a free copy of Easy Steps to Award-Winning Science Fair Projects to lead you through your own project.
A great resource for science project ideas, as well as how to do them, is the science project blog. Definitely worth bookmarking.
About the Author Aurora L. has been teaching science to kids for over 10 years. She is also a mechanical engineer, university instructor, pilot, astronomer and a real live rocket scientist (You should see the lab in her basement!) She has inspired thousands of kids with the fun and magic of science
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