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General Knowledge Class 7 - Earth And-Its-Environment Notes

Comprehensive study notes for Class 7 - Earth And-Its-Environment olympiad preparation

Earth and Its Environment

Welcome to the chapter on Earth and Its Environment for Class 7. In this chapter, you will learn about our planet Earth, its natural features, and how human activities affect the environment. By the end of this chapter, you will understand the importance of protecting our environment and ways to keep it clean and healthy!

Introduction

Earth is the only planet known to support life. It has land, water, air, and many living things. The environment includes everything around us—plants, animals, water, air, and land.

Features of Earth

  • Land: Includes mountains, plains, deserts, and forests.
  • Water: Oceans, rivers, lakes, and ponds cover about 71% of Earth's surface.
  • Air: The atmosphere surrounds Earth and gives us oxygen to breathe.
  • Living Things: Plants, animals, and humans depend on the environment to survive.

Natural Resources

  • Water, air, soil, minerals, forests, and wildlife are natural resources.
  • We use these resources for drinking, farming, building, and making products.

Human Impact on the Environment

  • Pollution from factories, vehicles, and waste harms air, water, and soil.
  • Cutting trees (deforestation) destroys forests and affects wildlife.
  • Using too many resources can lead to shortages and damage nature.

Protecting the Environment

  • Plant more trees to keep the air clean.
  • Reduce, reuse, and recycle waste.
  • Save water and electricity.
  • Do not litter; keep your surroundings clean.
  • Use eco-friendly products.

Fun Activity: Environment Poster

Make a poster showing ways to protect the environment. Use drawings and slogans like "Save Earth, Save Life!"

Summary

  • Earth is our home and has land, water, air, and living things.
  • Natural resources are important for life.
  • Human activities can harm the environment.
  • We must protect and care for our environment.

Practice Questions

  1. Name three natural resources found on Earth.
  2. What is pollution? Give one example.
  3. How can planting trees help the environment?
  4. List two ways to save water at home.
  5. Why is it important to recycle?

Challenge Yourself

  • Write a short paragraph on how you can help protect the environment.
  • Observe your surroundings and list three things that harm the environment.

Did You Know?

  • The Amazon rainforest is called the "lungs of the Earth" because it produces a lot of oxygen.
  • Earth Day is celebrated every year on April 22 to remind us to care for our planet.

Glossary

  • Environment: Everything around us—air, water, land, plants, and animals.
  • Pollution: Making air, water, or soil dirty and unsafe.
  • Natural Resource: Things found in nature that we use.
  • Recycle: To use things again instead of throwing them away.

Answers to Practice Questions

  1. Water, air, soil (any three: minerals, forests, wildlife, etc.).
  2. Pollution is making the environment dirty. Example: Smoke from cars.
  3. Trees clean the air and give us oxygen.
  4. Turn off taps when not in use; use a bucket instead of a shower.
  5. Recycling saves resources and reduces waste.

Protect the Earth and its environment for a better future!

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