Energy

Energy in Greek language means activity. It can be defined as the quantity assigned to any particle, object or system as a consequence of  its physical state. Energy can manifest itself in forms. There are different forms of energy. Here i will try to give you a learning on the different forms of energy. Following are answers to questions regarding the forms of energy along with a brief description.

What is an internal energy?
Any given body has energy because of the molecules present in it. When these molecules vibrate both kinetic energy and potential energy is created due to repulsions and attractions with each other. The totality of the energy formed is called as the internal energy.

What is thermal energy?
Thermal energy is also called heat energy. A hot body works when it cools and thus the energy created is thermal energy. An example of thermal energy is the energy of a steam engine.

There are also other forms of energy such as chemical energy and electrical energy. In my future posts i will try to provide something on the rest of the forms of energy. So here it is the definitions of two forms of energy.