Solids, Liquids and Gases Notes

EXPANSION & CONTRACTION

Expansion:

•      The process in which the volume of a substance increases with the increase in temperature is termed as expansion.

Figure 6- Electric cables expand in summer season

•      Matter increases in volume when there is an increase in temperature.

•      The volume increases the most in case of gases.

•      When something expands; it takes up more space.

Figure 8- Hot air balloon