Energy is the ability to do work or cause change. It can change from one form to another, but it cannot be created or destroyed. This is known as the law of conservation of energy.

One way that energy can change is through energy transformations. Energy transformations are when energy changes from one form to another. Here are some examples of energy transformations:

1. Solar energy: The sun’s energy is transformed into heat and light when it reaches Earth. Solar panels can also be used to transform the sun’s energy into electricity.
2. Thermal energy: Thermal energy is the energy of heat. It can be transformed into other forms of energy, like mechanical energy or electrical energy. For example, a steam engine uses heat to create mechanical energy that can be used to power a train.
3. Chemical energy: Chemical energy is the energy stored in the bonds between atoms in a substance. It can be transformed into other forms of energy, like heat or light. For example, when you burn wood, the chemical energy stored in the wood is transformed into heat and light.
4. Mechanical energy: Mechanical energy is the energy of motion. It can be transformed into other forms of energy, like heat or electrical energy. For example, when you ride a bike, your mechanical energy is transformed into heat through friction with the ground.

Energy transformations are important because they allow us to use energy in different ways. Understanding how energy can change from one form to another can help us learn more about the world around us and how we can use it to our benefit.