1. Complete the following chart;
Describe the Process |
Give 2 Examples |
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Conduction |
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Convection |
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Radiation |
2. Consider the following list
Place this list of phases of matter in order that you would generally expect from the best to the worst, in each of the following modes of thermal energy transfer;
Conduction; (list) - best - _____________, ____________, ____________, ____________ - worst
Convestion; (list) - best - _____________, ____________, ____________, ____________ - worst
Radiation; (list) - best - _____________, ____________, ____________, ____________ - worst
Be prepared to discuss the reasons that you placed the order in each of the lists.
3. Consider a vacuum flask (thermos) and read up on how it works @ http://en.wikipedia.org/wiki/Vacuum_flask and http://home.howstuffworks.com/thermos.htm . Discuss how conduction, convection and radiation was considered in the design of the vacuum flask. (one example of each is sufficient)
4. Radiation is emitted, absorbed, and reflected by all masses (which are above absolute zero). Black bodies absorb and emit the maximum amount of radiation whereas light coloured (reflective) bodies absorb and emit the least amout of radiation.
Windsurfers and sailors know that on an otherwise calm summer day, near a large body of water, you can expect an onshore breeze in the morning as the sun rises and an offshore breeze as the sun sets. Explain this phenomenon from a physics perspective.