Class 6 Geography Chapter 1 – Earth in the Solar System Notes | NCERT & JKBOSE
Earth in the Solar System is the first chapter of Class 6 Geography. This chapter builds the foundation for understanding the Universe, Solar System, Sun, planets, Moon, stars, and other celestial bodies.
These Class 6 Geography Chapter 1 notes are specially prepared for NCERT Solutions for Class 6 and JKBOSE Class 6 students in simple language for quick learning, revision, homework, and exam preparation.
Key Concepts – Earth in the Solar System
1. Earth – The Blue Planet
- Earth is the third planet from the Sun.
- It supports life because it has air, water, and suitable temperature.
- The shape of the Earth is called a Geoid.
- About two-thirds of Earth is covered with water, so it appears blue from space.
- Earth takes 24 hours to rotate and 365 days to revolve around the Sun.
2. The Solar System and Planets
- There are eight planets in the Solar System.
- Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
- Planets move around the Sun in fixed paths called orbits.
- Planets do not have their own heat and light.
- Mercury completes one orbit in 88 days.
- Venus is called Earth's twin due to similar size.
Did You Know? Jupiter, Saturn, and Uranus have rings made of rocks and ice particles.
3. Universe and Stars
- The Universe includes all space, matter, and energy.
- It contains billions of galaxies and stars.
- The Sun is a star made of hot gases.
- Stars form patterns called constellations (example: Ursa Major / Saptarishi).
4. The Moon
- The Moon is Earth’s natural satellite.
- It takes about 27.3 days to revolve around Earth.
- Only one side of the Moon is visible from Earth.
- Full Moon and New Moon occur once every month.
5. Asteroids and Meteoroids
- Asteroids are rocky bodies mainly found between Mars and Jupiter.
- Meteoroids are small rocks moving in space.
- When meteoroids hit Earth, they form a crater.
6. Artificial Satellites
- Artificial satellites are made by humans.
- They help in communication, weather forecasting, and research.
- Examples: INSAT, IRS, EDUSAT.
🎓 Exam Tip
Remember:
- Earth has only one natural Satellite that is Moon.
- Inner planets: Mercury, Venus, Earth, Mars (rocky).
- Outer planets: Jupiter, Saturn, Uranus, Neptune (gaseous).
- Sun is about 150 million km from Earth.
- Moon is about 3,84,400 km away from Earth.
Important MCQs – Earth in Our Solar System
- The Sun is a: (a) Planet (b) Star (c) Satellite (d) Asteroid Answer: (b) Star
- Earth revolves around the: (a) Moon (b) Mars (c) Sun (d) Jupiter Answer: (c) Sun
- The shape of the Earth is: (a) Flat (b) Round (c) Geoid (d) Square Answer: (c) Geoid
- Which planet has rings? (a) Earth (b) Mars (c) Saturn (d) Venus Answer: (c) Saturn
- The Moon is Earth’s: (a) Planet (b) Star (c) Satellite (d) Comet Answer: (c) Satellite
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Frequently Asked Questions (FAQs)
What is the Solar System?
The Solar System consists of the Sun and all celestial bodies that revolve around it.
Why is Earth called a unique planet?
Earth supports life due to air, water, and suitable temperature.
What causes day and night?
Rotation of the Earth causes day and night.
What causes seasons?
Revolution of the Earth around the Sun causes seasons.
Which planet is called the Red Planet?
Mars is known as the Red Planet.
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