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Flash Cards: Nature’s Treasures

Structured practice

Nature’s Treasures - Flash Cards

These flash cards cover important concepts from Nature’s Treasures in Curiosity for Class 6 (Science).

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What is air?

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Air is a mixture of gases that surrounds the Earth, essential for life. It includes nitrogen (78%), oxygen (21%), and other gases (1%).

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Why do we need oxygen?

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Oxygen is vital for breathing and essential for the survival of most living organisms.

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3/19

What is the main source of energy for life on Earth?

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The Sun is the main source of energy for all living organisms on Earth.

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What are renewable resources?

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Renewable resources are natural resources that can be replenished naturally over time, such as air, water, and forests.

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What are non-renewable resources?

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Non-renewable resources are those that do not replenish within a reasonable time, such as fossil fuels and minerals.

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What is water harvesting?

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Water harvesting is the collection and storage of rainwater to use it later, helping to conserve water.

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What is the composition of air?

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Air is composed of approximately 78% nitrogen, 21% oxygen, and 1% other gases such as argon and carbon dioxide.

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How do plants use sunlight?

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Plants use sunlight to perform photosynthesis, allowing them to produce their food.

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What is a firki?

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A firki is a paper pinwheel that spins when blown by wind, demonstrating how wind energy works.

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Why is soil important?

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Soil supports plant growth, holds nutrients, and provides habitat for many organisms.

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What is the significance of forests?

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Forests are vital for biodiversity, providing habitat, food, and oxygen for living organisms.

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What are fossil fuels?

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Fossil fuels are non-renewable resources formed from the remains of ancient plants and animals, used as energy sources.

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How can we reduce water wastage?

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We can reduce water wastage by fixing leaks, using water-efficient fixtures, and harvesting rainwater.

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What human activity contributes to water pollution?

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Throwing trash and waste materials into water bodies pollutes freshwater sources.

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What role do trees play in the environment?

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Trees provide oxygen, reduce carbon dioxide, and help maintain the water cycles and soil quality.

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What is the Chipko movement?

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The Chipko movement was an effort to protect trees by hugging them, initiated in Uttarakhand, India.

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What can we do to combat air pollution?

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We can reduce air pollution by using public transport, walking, using electric vehicles, and minimizing fossil fuel use.

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What is dynamic equilibrium in ecosystems?

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Dynamic equilibrium refers to the balance in ecosystems, where resources are consumed and replenished sustainably.

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Why should we conserve natural resources?

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Conserving natural resources ensures that they are available for future generations and helps protect the environment.