Thermal Expansion

Thermal Expansion happens a lot in everyday life. When something is heated and expands this is Thermal Expansion. The way Thermal Expansion works, is when it is heated the atoms expand, and then when it is cooled it shrinks. Several examples of Thermal Expansi
Thermal Expansion happens a lot in everyday life. When something is heated and expands this is Thermal Expansion. The way Thermal Expansion works, is when it is heated the atoms expand, and then when it is cooled it shrinks. Several examples of Thermal Expansion would be some of the following:
· When mercury in a thermometer rises it is because of thermal expansion.
· Thermal Expansion caused sometimes when you see cracks in concrete that have spread it.
· Take a thermostat, there are two pieces of metal in a thermostat, when it gets heated up the pieces of metal spread apart and shuts the furnace off, and when it cools back down the two pieces of metal touch each other and that triggers the furnace to come back on.
· Power lines can be an example of Thermal Expansion. In the summer when it is hot you will notice that the power lines hang down lower because they expand from the heat, so then in the winter you will notice they will tighten back up.
· A metal roof is a good example of Thermal Expansion. When the sun hits a metal roof it will expand then when it cools down you can hear it popping and cracking because then it contracted.
Those are just a few examples of Thermal Expansion, you can see this is very common in things that we are around. A a a a a a a a a a a a aq a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a aa aa aaa a a a a a a a a a a a a jdksla; jdksal; jkfdls;a jdksl;a fdjskla; fdsjkal; fdsj a a a a a a a a a a a a a a a a a a. on would be some of the following:
· When mercury in a thermometer rises it is because of thermal expansion.
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