Question

What happens to the size of a material when it is cooled?

Answer 1

Answer:

Most materials contract when they are cooled and get bigger when they are warmed up. ... Negative thermal expansion occurs when, during heating, a crystal contracts along one or more crystal axes, while positive thermal expansion describes what happens when the material expands along one or more of these axes.

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Answer 2

Answer:

When something is heated or cooled, its length changes by an amount proportional to the original length and the change in temperature: ... Even sidewalks are built accounting for thermal expansion. Holes expand and contract the same way as the material around them.

Explanation:

When something is heated or cooled, its length changes by an amount proportional to the original length and the change in temperature: ... Even sidewalks are built accounting for thermal expansion. Holes expand and contract the same way as the material around them.