Forms of energy:

There are various forms of energy needed by the body, such as: heat, sound, light and chemical. Heat is a thermal energy. Heat is able to be transferred to different places through a material, through a moving liquid or gas, and through radiation. Surfaces which are dark are better at absorbing heat energy heat energy than light serves which are shiny. Sound is the movement of energy through substances in longitudinal waves. Sound is produced when a force causes an object or substance to vibrate this is when the energy is transferred through the substance in a wave. The energy in sound is far less than other forms of energy. Light is a form of energy which our sense of sight can detect. It is made of electro-magnetic radiation and travels in a straight path. The speed of light travels at about 300,000 kilometres per second, meaning that nothing travels faster than light. Chemical energy is an energy that is stored in chemicals, such as sugar and gasoline. Chemical energy is the energy in a substance that can be released by a chemical reaction.

Laws of energy conservation:

The Law of Conservation of Energy states that energy cannot be created or destroyed, just transformed from one form to another. These forms can include kinetic and potential energy as well as light, heat and sound. Energy can also be transferred between objects. Since energy cannot be created or destroyed, the amount of energy present in the universe is always the same. It is simply being transformed and transferred over and over again. An importance of this law is that energy can only be transformed from one state to another. The only thing that can happen to energy in a closed system is that it can change, for example instance chemical energy can become kinetic energy.

Energy in the body:

Many people believe that energy in only used within muscular activity and