Forms of Energy

1. Mechanical energy: Mechanical energy is defined as the energy associated with the motion and the position of the object. It can possess energy in the form of either potential energy, kinetic energy or both. Hence, mechanical energy is expressed as the sum of kinetic energy and potential energy.

`M.E = m xx g xx h + 1/2 mv^2`

For example, a bicycle climbing a hill possesses kinetic energy as well as potential energy.

2. Thermal energy: It is the energy obtained by an object due to its temperature. It is also called thermal energy. For example, energy possessed by a hot cup.

3. Nuclear energy: It is the energy present in the nucleus of an atom. Nuclear energy is released when the nucleus combines or separates. Therefore, we can say that every atom in this universe comprises nucleus energy. For example, uranium is a radioactive metal capable of producing nuclear energy in nuclear power plants

4. Chemical energy: It is the energy accumulated in the bonds of chemical compounds. Chemical energy is released at the time of chemical reactions. For example, energy possessed by natural gas and biomass.

5. Kinetic energy: Kinetic energy (KE) is the energy a moving object has because of its motion. To change the kinetic energy of an object, work must be done on it. The formula for kinetic energy is K.E. = ½mv², where 'm' represents the object's mass and 'v' represents its speed. Examples of kinetic energy include a running athlete, the wind blowing, or an aeroplane flying.

6. Geothermal energy: The energy obtained from hot molten rocks and hot fluid trapped inside the earth is called geothermal energy.