Monday, January 26, 2009

science class the week of 1- 19

In science class we talked about the three different types of heating. There is convection, radiation and conduction. In the process called convection, the particles inside of the food in the oven get sped up. this happens because the fire all around it makes the food particles speed up and make the food cook and when it is done it will feel hot. in radiation the same type of things happen but instead of a fire speeding the particles it is micro waves that travel though the food. the process happening close to the core of the earth is convection because the hot particles rise, then cool and fall back down to start the process over again.

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