Which term describes the capacity of a material to expand when it's heated?

Which term describes the capacity of a material to expand when it's heated?

• A. Symmetry
• B. Thermal expansion
• C. Surface Graining
• D. Tang

Answer: (B)

When a material is heated, its atoms vibrate more and take up more space, causing the material to get larger. This behavior is called thermal expansion. The amount a material expands per degree of temperature change is described by its coefficient of thermal expansion, which varies from one material to another. Other terms in the list refer to things unrelated to this effect: symmetry is about how a shape remains the same under certain transformations, surface graining describes surface texture, and tang isn’t a standard term used for this concept.

When a material is heated, its atoms vibrate more and take up more space, causing the material to get larger. This behavior is called thermal expansion. The amount a material expands per degree of temperature change is described by its coefficient of thermal expansion, which varies from one material to another. Other terms in the list refer to things unrelated to this effect: symmetry is about how a shape remains the same under certain transformations, surface graining describes surface texture, and tang isn’t a standard term used for this concept.