Thermal Expansion

Particles of things expand when heated, this affects the volume of solids.

Linear expansion:

Twice the change in length, means twice the original length had and vice versa.

Alpha: Coefficient of linear expansion, small numbers big changes.

• Present in two-dimensional figures, like circles, holes expand with plates.

• Change in length is the same as diameter or radius (depends)

Bimetals: When something has a higher coefficient of expansion (brass), it can bend more easily than ones with lower coeffcients like steel, but as brass expands it will bend the steel.

Volume expansion:

In cube: find change of the area first through difference of length,