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Showing 1 question in Chemistry for Class 8. Tap a card to reveal the answer.
ChemistryCoal and PetroleumeasyWhy are coal and petroleum called fossil fuels, and why should we use them carefully?
Reveal answer ↓
What it is
Coal and petroleum are fuels formed from ancient buried life over millions of years.
Answer
Coal and petroleum are called fossil fuels because they were formed from the dead remains of prehistoric plants and animals buried under the earth for millions of years under high heat and pressure. They are exhaustible natural resources - they take millions of years to form but are being used up fast - so they must be conserved and used carefully.
- •Formed from prehistoric dead organisms
- •Take millions of years to form
- •Exhaustible (non-renewable)
- •Must be conserved
Why learn this
They are running out and cause pollution - the reason the world is shifting to solar power and EVs.
💡 Memory trick
Fossil = from long-dead life; Exhaustible = it will Exit (run out).