General Knowledge Class 6 - Universe Notes

Universe

Welcome to the chapter on Universe for Class 6. In this chapter, you will learn about the universe, its parts, and some amazing facts about space. By the end of this chapter, you will know what the universe is, what it contains, and why it is so fascinating!

Introduction

The universe is everything that exists—space, stars, planets, galaxies, and more. It is huge and still growing. Scientists study the universe to learn about its mysteries.

What is in the Universe?

• Stars: Big balls of burning gas. Our Sun is a star.
• Planets: Large objects that move around stars. Earth is a planet.
• Moons: Objects that move around planets.
• Galaxies: Huge groups of stars, planets, and dust. The Milky Way is our galaxy.
• Asteroids and Comets: Small rocky or icy objects that move in space.

Our Solar System

• The Sun is at the center.
• There are eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
• Earth is the only planet known to have life.

Amazing Facts About the Universe

• The universe is about 13.8 billion years old.
• Light from the Sun takes about 8 minutes to reach Earth.
• There are billions of galaxies in the universe.
• The largest planet in our solar system is Jupiter.

Fun Activity: Make a Solar System Model!

Use clay or paper to make the Sun and planets. Arrange them in order and label each one.

Summary

• The universe contains stars, planets, moons, galaxies, and more.
• Our solar system has the Sun and eight planets.
• Scientists study the universe to learn about space and its wonders.

Practice Questions

1. What is the universe?
2. Name the largest planet in our solar system.
3. How many planets are there in our solar system?
4. What is a galaxy?
5. Which planet do we live on?

Challenge Yourself

• List the planets in order from the Sun.
• Draw and label the solar system.

Did You Know?

• Neptune is the farthest planet from the Sun in our solar system.
• A shooting star is actually a meteor burning up in Earth's atmosphere.

Glossary

• Universe: Everything that exists in space.
• Galaxy: A huge group of stars, planets, and dust.
• Solar System: The Sun and the objects that move around it.
• Planet: A large object that moves around a star.

Answers to Practice Questions

1. The universe is everything that exists—space, stars, planets, galaxies, and more.
2. Jupiter.
3. Eight.
4. A galaxy is a huge group of stars, planets, and dust.
5. Earth.

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The universe is full of wonders! Keep exploring and learning about space.