Energy is the ability and capacity to do work. Also, energy can be transformed from one form to another. It is a conserved quantity.
Sources of Energy
There are two main sources of energy: Renewable and Non-renewable source of energy.
Renewable sources of energy are the ones that are available abundantly in nature and are sustainable. They are referred to as Green energy. These energy resources can be naturally replenished and are safe for the environment.
The major types of renewable energy are:
- Biomass from plants
- Hydropower from flowing water
- Solar energy from the sun
- Wind energy
- Geothermal energy
- Tidal energy
Non-renewable sources: this type of energy is found underneath the earth. These energy resources replenish at different speeds, and it can take up to millions of years to replenish.
The main example of non-renewable energy are:
- Coal
- Crude oil
- Natural gas
- hydrocarbon gas liquids
- Nuclear energy
Uses of Energy
- Heat energy is used for cooking, pressing clothes, and drying things. Heat energy is also used for welding, purification, and expansion of metals
- Nuclear energy is used in power generators, transportation, agriculture, and medicine.
- Solar energy is used for electrification
- Mechanical energy is used to drive vehicles and automobile machines
- Animals and human beings see things around clearly due to light energy.
- Chemical energy in foods enhances all living organisms to carry out their daily activities
- Green plants utilize radiant energy for photosynthesis.
- Sound energy is used in communication
- Electrical energy is used to power our appliances, television sets, computer sets, radio sets, e.t.c
- It is use for cooling
