Class 6 Science Chapter 11 Nature’s Treasures – Revision Notes

Nature’s Treasures explains what counts as a natural resource and works through each one in turn, air, water, soil, and sunlight, and this page organises that coverage into short notes.

Last Updated: September 23, 2026

What Are Natural Resources?

• Materials/services provided by Earth that support life — not made by humans.
• Examples: Sun, air, water, soil, minerals, forests, fossil fuels, wildlife.

Air

• Mixture of gases: mainly nitrogen (~78%) and oxygen (~21%), plus small amounts of CO2 and others.
• Pollution (vehicles, factories, burning waste) reduces air quality.

Water and Soil

• Water: drinking, cooking, bathing, irrigation — must not be wasted.
• Soil: supports roots, holds nutrients; forms very slowly, hard to replace once eroded.

Sunlight

• Primary energy source for almost all life on Earth.
• Enables photosynthesis in green plants; provides heat and light.

Forests

• Provide wood, fruits, medicinal plants, wildlife habitat.
• Roots hold soil together — prevent soil erosion.
• Deforestation disturbs water cycle and local climate.

Renewable vs Non-renewable Resources

• Renewable — replenished naturally in a short time (sunlight, air, water, forests if managed well).
• Non-renewable — limited, take millions of years to form (coal, petroleum, minerals).

Conservation Habits

• Turn off taps when not in use.
• Avoid unnecessary vehicle use (reduces air pollution).
• Plant trees; avoid littering.

One-Line Summary

Nature’s treasures — air, water, soil, sunlight, and forests — sustain all life, and this chapter explains how to tell renewable from non-renewable resources and why using them responsibly matters for future generations.

Frequently Asked Questions

What are natural resources, and why are they described as valuable treasures?
Natural resources are materials that occur naturally in the environment, such as water, air, minerals, and forests, described as treasures because human life and various activities depend heavily on them.

What is the difference between renewable and non-renewable natural resources?
Renewable resources, such as sunlight, wind, and water, can be replenished naturally over a relatively short time, while non-renewable resources, such as coal and minerals, take an extremely long time to form.

Written by Satish

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