Question

When the weather becomes cool, the "teeth" of the joint move away from each other. When the weather becomes warm, they move toward each other. Which statement is true about the particles that make up the bridge?

Answer 1

Answer:

A) When the sides of the joint are close together, the particles have more kinetic energy than they do when sides are farther apart.

Explanation:

Most materials are subjected to thermal enlargement: a trend to extend when ignited, and to decrease when frozen. For this reason, bridges are constructed with metal extension joints, so that they can extend and shrink without creating flaws in the overall composition of the bridge. Other devices and compositions likewise have built-in safeguards against the dangers of thermal expansion.