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What is Natural Gas (fossil fuel)?
Grade Level:
Class 7
Space Technology, EVs, Climate Change, Biotechnology, HealthTech, Robotics, Chemistry, Physics
Definition
What is it?
Natural gas is a fossil fuel, which means it was formed deep underground over millions of years from the remains of tiny plants and animals. It is mainly made of a gas called methane and is a clean-burning energy source.
Simple Example
Quick Example
Imagine your kitchen stove running on LPG to cook delicious biryani. Natural gas is similar, but it's supplied through pipelines directly to homes or used in big power plants. Just like how your mobile data helps you watch videos, natural gas provides energy for many things around us.
Worked Example
Step-by-Step
Let's say a power plant needs 100 units of energy. If coal gives 70 units of energy for the same amount, how much more efficient is natural gas?
Step 1: Understand the base energy requirement: 100 units.
---Step 2: Energy from coal: 70 units.
---Step 3: Energy from natural gas (assuming it meets the requirement): 100 units.
---Step 4: Calculate the difference in energy provided by natural gas compared to coal for the same amount: 100 - 70 = 30 units.
---Step 5: This means natural gas is 30 units more efficient than coal in this example.
---Answer: Natural gas is 30 units more efficient in this scenario.
Why It Matters
Natural gas is crucial for generating electricity, powering vehicles, and even making fertilizers. Understanding it helps us discuss climate change and future energy solutions. Engineers in the energy sector and scientists working on new fuels often deal with natural gas.
Common Mistakes
MISTAKE: Thinking natural gas is the same as LPG (cooking gas) | CORRECTION: While both are used as fuel, LPG is propane and butane, stored as liquid, while natural gas is mainly methane, usually supplied through pipelines as a gas.
MISTAKE: Believing natural gas is a renewable energy source | CORRECTION: Natural gas is a fossil fuel, meaning it takes millions of years to form and is therefore a non-renewable resource, unlike solar or wind energy.
MISTAKE: Confusing natural gas with petrol or diesel | CORRECTION: Petrol and diesel are liquid fuels used for vehicles, while natural gas is a gaseous fuel, often used in CNG (Compressed Natural Gas) vehicles or for electricity generation.
Practice Questions
Try It Yourself
QUESTION: What is the main component of natural gas? | ANSWER: Methane
QUESTION: Is natural gas considered a renewable or non-renewable resource? Why? | ANSWER: Non-renewable, because it takes millions of years to form and its reserves are limited.
QUESTION: Name two everyday uses of natural gas in India. | ANSWER: Cooking (piped gas in homes) and powering CNG vehicles (like auto-rickshaws and buses).
MCQ
Quick Quiz
Which of the following is a primary use of natural gas?
Making plastic toys
Generating electricity
Building houses
Growing vegetables
The Correct Answer Is:
B
Natural gas is primarily used as a fuel for power plants to generate electricity and for heating. While it can have other uses, electricity generation is a major application.
Real World Connection
In the Real World
In many Indian cities, auto-rickshaws and public buses run on CNG (Compressed Natural Gas), which is natural gas stored under high pressure. This helps reduce air pollution compared to petrol or diesel vehicles, making our city air cleaner.
Key Vocabulary
Key Terms
FOSSIL FUEL: Fuel formed from ancient organic matter over millions of years | METHANE: The main chemical component of natural gas | NON-RENEWABLE: A resource that cannot be replaced easily once used up | PIPELINE: A long pipe used to transport gas or liquid over distances | CNG (COMPRESSED NATURAL GAS): Natural gas stored under pressure, used as vehicle fuel
What's Next
What to Learn Next
Now that you understand natural gas, you should explore 'Renewable Energy Sources' next. This will help you compare different ways we generate energy and understand why countries are looking for greener alternatives.
