Page 232 - Primary Five Science

How heat travels.

When two items are combined or touching each other, their

molecules will transfer heat energy.

Heat will flow from the hotter object to the colder. The mole-

cules in the hotter object will slow down and the molecules in

the colder object will speed up. Eventually they will get to the

point where they have the same temperature. This is called

equilibrium.

There are three ways how heat travels from one place to an-

other. These are:

1. Conduction

2. Convection

3. Radiation