Question

Fill in the blanks.
An increase in the size of a body due to heating is called ________________.

Answer 1

1. When an object is heated, the molecules gain more energy.
2. They start to vibrate more vigorously.
3. As a result, the particles move apart and there is an increase in the size of the body.
4. This increase in the size of the body due to heating is called thermal expansion.
5. The amount of expansion depends on the amount of heat supplied and the nature of the substance under study.

Thus, an increase in the size of a body due to heating is called thermal expansion.