Aluminum has a positive coefficient of thermal expansion. Consider a round hole that has been drilled in a large sheet of aluminum. As the temperature increases and the surrounding metal expands, the hole diameter will

Question

Quizplus · Accepted Answer

When aluminum or any material with a positive coefficient of thermal expansion heats up, both the material and any holes within it expand. Thus, as the temperature increases, the diameter of the hole in the aluminum sheet will also increase.

Aluminum Has a Positive Coefficient of Thermal Expansion