Energy is required for the evolution of life forms on earth. We obtain energy from different sources. Everything that we use today – food, clothes, house, vehicles, fuel, notebooks, furniture, cooking gas, utensils, toys, roads, etc. are obtained from resources on the earth. The natural resources that we use today are the prime source of energy for day-to-day activities of humans, without which we would still be lurking around in the Stone Age. But are they being replenished at the rate at which they are being used up? In this article, we will discuss how long an energy source will last us.
Renewable and Non-renewable Resources
All things that are useful to us are called resources. Renewable and non-renewable are the two types of energy resources.
A renewable resource is the energy source which can be replenished within a short period of time. Whereas, the non-renewable resources take a significant amount of time to be replenished by the environment.
The non-renewable resources comprise of fossil fuels like coal, petroleum, oil, etc., the usage of which has detrimental effects on the environment. Comparatively, renewable resources are more environment-friendly. They include energy from the sun, tides, wind, biomass, etc.
How Long Will An Energy Source Last Us?
We can split our discussion in two directions. We first talk about how long a renewable energy source will last us. Renewable energy resources are called ‘renewable’ because they are constantly renewed or regenerated.
- The energy from the sun, the movement of the waves, the flow of the river – these are some of the activities that have been happening over millions of years and will continue to happen in the future. They are constant and reliable sources.
- The solar energy, tidal energy, wind energy, hydroelectric energy, geothermal energy, etc. will never get exhausted as they can be generated at the same rate at which they are being used.
- When we talk about the non-renewable energy source, they are limited in quantity. They cannot be renewed easily once they are depleted. They take thousands of years to be formed. At the present rate of consumption, these resources will get exhausted in less than a hundred years.
It is very important to use non-renewable energy resources in a judicious manner. Otherwise, our future generations will not be left with any of them.
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