Monday, November 15, 2010

Test 9 ~ Objective 3

Objective 3:

1. The three types of heat transfer are conduction, convection, and radiation.

2. Heat moves from places where there is a lot of heat to places where there isn't a lot of heat (from high concentration to low concentration.)

3. Conductors make it easier for energy to pass through them, and insulators (most solid matters) make it harder for energy to go through them.  

4. A copper pipe would work better as a conductor because it has a lot of free electrons that can make the energy flow quicker and more efficient.  Their electrons are in a cloud, so they aren't tightly packed.

5. If I were in the forest, I would build a fire instead of putting up a tent.  If I made a tent, that would be conduction (atoms are in close proximity).  This would help me because I would be insulated, which can be, in some ways, the best form of heat.  If I built a fire (which I would), then that would be radiation (comes from the sun and travels in waves).  The fire would give off warm air, which would help to keep me warm.

Cites:
http://www.tapinsulation.com/heat.html
http://en.wikipedia.org/wiki/Heat_transfer
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/conins.html
http://www.highsierraadventures.com/skills/survival.htm

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