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♻️ Finite Resources and Recycling

Find out why some of Earth's resources run out, and how recycling helps them last longer.

lessons

~15 min

to learn

🔬 Science

subject

Teens

level

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What you’ll learn

Finite ResourcesUnderstand the difference between finite and renewable resources and give examples of each.Finite, or non-renewable, resources such as fossil fuels, metal ores, and minerals cannot be replaced quickly once used, so they run out. Renewable resources like sunlight, wind, water, and replanted wood are replenished as fast as we use them. Knowing the difference helps us use resources wisely.
Reduce, Reuse, RecycleExplain how recycling saves resources and energy and know the reduce, reuse, recycle order.Recycling collects used materials like aluminium, glass, paper, and plastic and turns them into new products, saving raw resources and energy and cutting waste. Recycling aluminium uses about 95 percent less energy than making it from ore. The three Rs go in order: reduce first, then reuse, then recycle.

Questions this course answers

What is a finite resource?

A finite resource cannot be replaced quickly once used, so its supply eventually runs out.

Which of these is a finite resource?

Coal is a fossil fuel that took millions of years to form, so it is finite, unlike wind, sunlight, and water.

Why can renewable resources like wind and sunlight keep being used?

Renewable resources are replenished naturally at least as fast as we use them, so they do not run out.

What does recycling mainly help us do?

Recycling turns used materials into new products, which saves raw resources and energy and cuts waste.

In the three Rs, which should you try first?

The best first step is to reduce, using less in the first place, before reusing or recycling.

How does recycling aluminium compare with making it from new ore?

Recycling aluminium melts down old cans and uses about 95 percent less energy than making it from fresh ore.

Grounded in trusted sources

Royal Society of Chemistry
BBC Bitesize
Britannica

Every Wunder lesson is built from real, reputable sources — never invented.

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