Does cold temperature affect the elasticity of a rubber band?
Asked by: Kimberley Answer Yes–a rubber band will actually become softer, or easier to stretch, when the temperature gets colder. The way to think of the elasticity is in terms of entropy, which is basically a measure of disorder. The universe is always moving towards a state of greater disorder. When a rubber band is stretched out, there aren’t as many ways the individual molecules can arrange themselves as there are when the rubber band is not stretched. They have to be sort of lined up, instead of in a jumble. There are a lot more ways to throw the molecules into a jumble than there are to line them up. When there are more ways to arrange the molecules, the entropy is higher. So when you stretch a rubber band, entropy dictates that the rubber band will want to contract again. Where does temperature come in? When the temperature is higher, the molecules are more excited, and want even more to be in a random jumbled state. Think of a class of kindergardners on a sugar high–they’ll w
