What are non-renewable resources of energy? Give two examples of such resources.
What are non-renewable resources of energy? Give two examples of such resources.
Non-renewable resources of energy are natural resources that are available in limited quantities in nature and cannot be replenished or regenerated within a short period of time once exhausted, as their formation takes millions of years.
Two examples of non-renewable resources of energy are:
- Coal
- Petroleum
Marking Scheme
- 11.0 mark for defining non-renewable resources of energy as exhaustible resources that take millions of years to form and cannot be easily replenished.
- 21.0 mark for providing two correct examples (0.5 marks for each example, e.g., coal and petroleum).
Hint
Recall resources that take millions of years to form and cannot be easily remade once we use them up.
Quick Oral Answer
Non-renewable resources of energy are those that exist in limited amounts and cannot be replenished quickly once used because their natural formation takes millions of years. Examples include coal and petroleum.
Analysis & Explanation
Energy resources are classified as renewable or non-renewable based on their replenishment rate. Non-renewable resources, such as fossil fuels (coal, petroleum, and natural gas), were formed deep inside the Earth from the remains of ancient plants and animals under high pressure and temperature over millions of years. Because our rate of consumption of these resources is vastly greater than their extremely slow rate of natural formation, they are considered exhaustible and non-renewable.
Common Mistakes
- 1Confusing non-renewable energy resources with non-biodegradable waste materials (like plastics).
- 2Giving renewable examples like solar or wind energy by mistake.
Interesting Facts
Coal and petroleum are often called fossil fuels because they are formed from the fossilized remains of prehistoric plants and marine organisms.
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2011?
This question carries 2 marks in the CBSE Class 10 Science 2011 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Our Environment" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Flow of Energy in an Ecosystem" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2011 paper?
This is a Short Answer question from Section A in the CBSE Class 10 Science 2011 paper.