There are lots of different kinds of energy in the universe; they can be found in many things, and in many forms.
Types of Energy
Remember: Molecules that make up matter contains energy. Huge amounts of energy.
Energy travels in the form of electromagnetic waves, such as heat, light, radio, and gamma rays.
Energy as Heat
Heat is in all things around us and in all matter. Heat energy result in movement of tiny particles called atoms, molecules or ions in solids, liquids, and gases It can be transferred from one object to another. Ice also has heat. Ice placed in a glass of warm water melts when the energy from the warm water moves from the water to the ice. Heat energy is important. We use it to heat our homes, cook food, heat water and dry clothes.
Energy as Light
Light energy is a kind kinetic energy and a form of electromagnetic radiation. Light is visible to the human eyes; and travels in the form of a wave. It can travel through space where there is no air.
Some sources of light energy are sun, moon, stars, fire, and candle. There are also some animals and plants that can create their own light. Light energy is important for plants and animals. It helps plants photosynthesis and growth. It also affects the temperature of water. We use light energy to help us see things, to power our homes and electrical appliance, etc.
Energy as Sound
You can hear sound energy as it is produced when an object vibrates. The vibration travels on waves through the air, water, wood or metal. Sound energy is a form of mechanical energy. We can learn a lot about the sounds we hear. It can tell us about the object, especially when we cannot use our vision. A good example of energy as sound comes from the radio.