Conduction, Convection and Radiation
This dog seems to enjoy the radiation of heat produced by the fire's flames.Copyright NOAA http://www.srh.noaa.gov/jetstream/atmos/images/fireplace.jpg
With the help of simple, teacher-led demonstration activities, students learn the basic concepts of heat transfer by means of conduction, convection and radiation. Then they apply these concepts as they work in teams to solve two lab problems: 1) maintain the warm temperature of one soda can filled with water at approximately body temperature, and 2) cause an identical soda can of warm water to cool as much as possible during the same 30-minute time interval.
Engineers encounter problems of warming and cooling liquids in a number of situations. For soda, this usually involves maintaining a cold temperature, but the principles described here are the same. Students approach the problems presented in this unit's activity as engineers, using heat transfer principles to accomplish a goal.
- Conduction, Convection and Radiation