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Science Class 2 - Air Water-And-Rocks Notes

Comprehensive study notes for Class 2 - Air Water-And-Rocks olympiad preparation

Air, Water and Rocks

Welcome to the chapter on Air, Water and Rocks for Class 2. In this chapter, you will learn about air, water, and rocks, why they are important, and how we use them in our daily life. By the end of this chapter, you will be able to tell where we find air, water, and rocks and how to keep them clean and safe!

Introduction

Air, water, and rocks are found all around us. All living things need air and water to live. Rocks are part of the Earth and are used in many ways.

Air

Air is everywhere, even though we cannot see it. We need air to breathe. Plants, animals, and people all need air.

  • We feel air when the wind blows.
  • Air helps birds and airplanes fly.
  • Air helps us dry our clothes.

Water

Water is a clear liquid that we drink and use every day. All living things need water to live.

  • We drink water when we are thirsty.
  • Plants need water to grow.
  • We use water for bathing, cooking, and cleaning.

Sources of Water

  • Rain
  • Rivers
  • Lakes
  • Wells
  • Ponds

Rocks

Rocks are hard, solid parts of the Earth. They come in different shapes, sizes, and colors.

  • Some rocks are small like pebbles, some are big like mountains.
  • Rocks are used to make buildings, roads, and statues.
  • Some rocks have minerals inside them.

Keeping Air, Water, and Rocks Clean

  • Do not throw garbage in water or on rocks.
  • Do not burn waste that makes the air dirty.
  • Plant more trees to keep the air clean.
  • Always drink clean water.
  • Do not break rocks or write on them.

Fun Activity: Nature Walk!

Go for a walk outside. Can you feel the air? Can you find water? Look for different rocks and see their shapes and colors!

Summary

  • Air, water, and rocks are found all around us.
  • We need air and water to live.
  • Rocks are used in many ways.
  • We must keep air, water, and rocks clean.

Practice Questions

  1. Why do we need air?
  2. Name two uses of water.
  3. Where do we find rocks?
  4. How can we keep water clean?
  5. What are rocks used for?

Challenge Yourself

  • Draw a picture showing air, water, and rocks.
  • List three things made from rocks.

Did You Know?

  • Diamonds and gold are found inside rocks!
  • The Earth is mostly made of rocks and water.

Glossary

  • Air: What we breathe; it is all around us.
  • Water: A clear liquid we drink and use every day.
  • Rock: A hard, solid part of the Earth.
  • Mineral: A natural substance found in rocks.

Answers to Practice Questions

  1. We need air to breathe and live.
  2. Drinking and bathing (or any two: cooking, washing, watering plants).
  3. On the ground, in mountains, in gardens, parks, and playgrounds.
  4. By not throwing garbage and keeping water sources clean.
  5. Making buildings, roads, statues, and tools.

Air, water, and rocks are precious. Use them wisely and keep them clean!

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