By the end of the subtopic learners should be able to:
  1. Define energy and state its characteristics.
  2. Identify sources of energy.
  3. Describe the effects of energy.

Effects of energy

  • Energy is the ability to do work.
  • Energy is what makes things happen.
  • We cannot touch energy.
  • We cannot see energy.  
  • Energy can neither be created nor destroyed, it can only be changed from one form to another.

What does energy do?

  • Energy make things change shape.
  • Energy can destroy things
  • Energy make things move.
  • Energy can make food to be cooked.
  • Energy can make live things to grow.

Energy makes things happen:

Sources of energy



  • Energy is that which is required to make objects move and make things happen.
  • Activities such as running up a hill, lifting bricks, pushing a car or wheelbarrows are as a result of using energy.