Which energy source cannot be replenished naturally in a short period of time?
Show answer & explanation
Correct answer: C
Explanation
Correct Answer
Natural Gas
Explanation
Natural Gas is a non-renewable energy source because it is a fossil fuel formed deep beneath the Earth's surface over millions of years from the remains of ancient marine organisms. Since its formation takes an immense geological timescale, it cannot be replenished naturally in a short period of time once it is consumed. In contrast, wind, solar, and hydroelectric energy are renewable resources that are constantly and naturally replenished on a daily basis.
Key Points
Non-renewable energy sources include fossil fuels like natural gas, coal, and petroleum, as well as nuclear fuels like uranium.
These resources are finite, meaning their continuous extraction will eventually lead to complete exhaustion since human consumption far outpaces their natural formation rate.
The combustion of natural gas releases greenhouse gases, primarily carbon dioxide (CO2), which contribute to global warming and climate change, though it burns cleaner than coal and oil.
Additional Facts
Natural gas is primarily composed of methane (CH4), a potent greenhouse gas that can trap heat in the atmosphere very effectively if leaked directly.
It is commonly used for electricity generation, industrial heating, and as a fuel for vehicles in the form of Compressed Natural Gas (CNG).
Global energy transitions are heavily focused on shifting away from natural gas and other fossil fuels toward sustainable, inexhaustible alternatives like solar and wind power.
Important Questions
Question: What is the primary chemical component that makes up the majority of natural gas?
Answer: Methane (CH4).
Question: Why are solar, wind, and hydroelectric energy resources considered renewable?
Answer: Because they are naturally replenished in a short period of time and do not deplete with use.