What are Non-Renewable Resources?

S4-SA4-0246

Grade Level:

Class 7

Space Technology, EVs, Climate Change, Biotechnology, HealthTech, Robotics, Chemistry, Physics

Definition

What is it?

Non-renewable resources are natural resources that exist in limited amounts and cannot be replaced or replenished naturally within a human lifetime. Once they are used up, they are gone forever or take millions of years to form again.

Simple Example

Quick Example

Imagine you have a small box of your favourite laddoos. Once you eat all the laddoos, they are finished, and you can't get more from the same box. Similarly, non-renewable resources like coal are limited; once we burn all the available coal, it's gone.

Worked Example

Step-by-Step

Let's say a coal mine has 1000 tonnes of coal. If a power plant uses 100 tonnes of coal every year, how many years will the coal last?---Step 1: Identify the total amount of resource available. Total coal = 1000 tonnes.---Step 2: Identify the rate of consumption. Coal used per year = 100 tonnes.---Step 3: Divide the total amount by the rate of consumption to find the duration. Duration = Total coal / Coal used per year.---Step 4: Calculate the duration. Duration = 1000 tonnes / 100 tonnes/year = 10 years.---Answer: The coal will last for 10 years.

Why It Matters

Understanding non-renewable resources is crucial for developing sustainable technologies like Electric Vehicles (EVs) and for tackling Climate Change. Engineers and scientists working in these fields need to find alternative energy sources. This knowledge can lead to careers in renewable energy development or environmental science.

Common Mistakes

MISTAKE: Thinking non-renewable resources can be recycled indefinitely like plastic bottles. | CORRECTION: While some materials derived from non-renewable resources (like metals) can be recycled, the primary energy resources like coal, oil, and natural gas are consumed and cannot be recycled once burned.

MISTAKE: Confusing non-renewable with 'not useful'. | CORRECTION: Non-renewable resources are extremely useful and have powered our world for centuries, but their limited supply means we need to find alternatives.

MISTAKE: Believing non-renewable resources will never run out. | CORRECTION: They are finite and will eventually deplete if we continue to use them at current rates. This is why conservation is important.

Practice Questions

Try It Yourself

QUESTION: Name two examples of non-renewable resources. | ANSWER: Coal and Petroleum (or Natural Gas, Uranium).

QUESTION: If a country has 500 million barrels of oil reserves and uses 5 million barrels per year, how long will the oil reserves last? | ANSWER: 100 years (500 million / 5 million = 100).

QUESTION: Why is it important for countries like India to invest in solar and wind energy, even though we have some coal reserves? | ANSWER: Because coal is a non-renewable resource that will eventually run out, and burning it causes pollution and contributes to climate change. Solar and wind are renewable, clean, and sustainable alternatives for long-term energy security.

MCQ

Quick Quiz

Which of the following is NOT a non-renewable resource?

Coal

Petroleum

Solar Energy

Natural Gas

The Correct Answer Is:

Solar energy comes from the sun and is continuously available, making it a renewable resource. Coal, petroleum, and natural gas are fossil fuels that take millions of years to form and are finite, thus non-renewable.

Real World Connection

In the Real World

In India, our electricity often comes from thermal power plants that burn coal. The government and companies are actively working to reduce this dependence by promoting electric vehicles and installing solar panels on homes and fields, like in Gujarat's solar parks. This shift helps conserve our non-renewable resources and protect the environment.

Key Vocabulary

Key Terms

FOSSIL FUELS: Fuels formed from the remains of ancient plants and animals over millions of years, like coal, oil, and natural gas | DEPLETE: To use up a supply or amount of something | FINITE: Having limits or a fixed number or amount | CONSERVATION: The careful preservation and protection of something, especially planned management of a natural resource to prevent exploitation, destruction, or neglect.

What's Next

What to Learn Next

Now that you understand non-renewable resources, you should explore 'What are Renewable Resources?'. This will help you compare the two types and understand why renewable energy is so important for our future and for a cleaner India!