Question

Give two examples each for the following energy transformations: [4 Marks]
a) Chemical to heat
b) Electrical to thermal

Answer 1

a) Chemical to heat [2 Marks]
1) Chemical energy from the fuels used in vehicles transforms to mechanical energy involved in the movement of vehicles.
2) Chemical energy in the foods we intake help us to move around from one place to another, thus providing us enough mechanical energy.

b) Electrical to thermal [2 Marks]
1) Hair dryers use electricity to produce hot air for drying purpose.
2) Microwave ovens use electricity for heating foods kept inside them.