An informative poster about heat sources to display in your classroom.
The poster clearly explains the three primary sources of heat with examples.
The friction created when two surfaces rub against each other produces heat energy. Some examples include rubbing your hands together, sliding down a slippery-dip or jumping on the spot.
Electrical appliances have the ability to convert electrical energy into heat energy. Some examples include hair dryers, light bulbs and stove top elements.
Heat energy can be produced as a result of a chemical reaction. Some examples include burning wood, digesting food and mixing chemical substances.