Question

Distinguish between Thermal energy and Hydro electricity.

Answer 1

Hint: Thermal energy is a conventional source of energy whereas Hydroelectricity is a non conventional source of energy. They both produced electricity with different mediums.

Complete answer:

Thermal Energy	Hydroelectricity
Thermal energy is produced by burning coal, petroleum and Natural gas.	Hydroelectricity is produced by fast flowing water with the help of turbines.
It uses non-renewable resources to generate electricity.	It uses renewable resources to generate electricity.
It causes pollution.	It doesn’t cause pollution.
It is expensive in the long run.	It is cheaper in the long run.
High maintenance and repair cost	Less maintenance and repair cost

Note: Thermal energy In India Thermal power plants contribute the largest proportion of electricity into the national power grid which is around 70% whereas hydroelectricity accounts for 25% of total electricity produced in India.