Explaining Thermal Expansion
00:00 - 05:59
5m 59s
Mr. Wizard explains why metals expand when they're heated. He uses real metals to demonstrate the phenomena.


Please sign in to write a comment.
Video Transcript

Related Clips

Mr. Wizard explains styrofoam and explains how manufacturers use thermal expansion to create it.
Beakman smashes a tomato with a mallet. Then puts another tomato in liquid nitrogen to show it was frozen and hits with a mallet. He then takes a blown up balloon and puts it in a bowl. He pours liquid nitrogen over it and shows the balloon shrinking. He explains this happens because everything is made of molecules. Then he uses a cartoon schematic to explain further. He also shows that when the balloon gets warmer, the air starts to expand and fills back up the balloon.
Elsa unintentionally reveals her ice powers when Anna takes off one of her gloves. She runs away from the townspeople after a series of accidents so as not to cause more harm and lose more of the trust of her fellow townspeople.
Bill explains the three states of matter: solids, liquids, and gases. He explains that these states differ in only the amount of energy they contain. Bill also uses several examples to illustrate the difference between the three states.
Hank explains polymers, describes some of their properties, and explains how they are formed. He also explains what you need to make a polymer: a molecule that can easily bond to another identical molecule at two points. Hank focuses on the polymer, Polyethylene, because it is the most common plastic in the world, and discusses its nomenclature.