CBSE Revision Notes for Class 6 Geography Chapter 1 - The Earth in the Solar System

VSAT 2022

The Earth in the Solar System Class 6 Notes Geography Chapter 1 - PDF Download

Whenever we look in the sky, there is always that moment of mystery that surrounds our thinking. Do you think about what’s on the other side of the Moon? Will we be able to survive if we go on Mars and other thoughts like that? Well, if you are someone who is always wondering about life outside Earth, then this chapter is made for you. In this chapter, we will be talking about different planets and their relation with Earth along with the solar system.


In the solar system for class 6, students will learn about why the Earth is the only planet in the solar system, which can harness life. Likewise, it is the only planet with water in liquid form. Some facts about the mighty Earth will blow up your mind, and all of these you can find in the solar system for class 6 notes. Our teachers have been teaching students for more than five years. Thus, they have core knowledge of the subjects.


Important Topics Covered in the Chapter

Following is a list of important topics that have been covered in the chapter:

  • The Sun

  • The Planets

  • The Earth

  • The Moon

  • Meteoroids

  • Asteroids

Download PDF of CBSE Revision Notes for Class 6 Geography Chapter 1 - The Earth in the Solar System

Access Class 6 Social Science Geography Chapter1 : The Earth in The Solar System

Important Terms

  • We can only see the full moon once in a month, also called Poornima.

  • During the New Moon or Amavasya, about a fortnight later we cannot see the moon at all.

  • All the planets, their natural satellites, stars and the other objects that we see shining in the night sky are called celestial bodies.

  • Stars are the celestial bodies that are made out of gasses and have their own heat and light.

  • A group of stars is called constellations. Example: Ursa Major or Big bear. Saptarishi is the most easily recognizable constellation.

  • The North Star or the Pole Star indicates the north direction and it remains in the same position.

  • Jupiter, Saturn and Uranus have rings of debris around them that can be seen from Earth.


The Solar System

The sun, eight planets, asteroids, meteorites form the solar system, with the Sun at the center.

  1. The Sun

  • It is made up of extremely hot gasses and is located at the center of the solar system.

  • It is the ultimate source of light and heat and is located about 150 million kilometers away from us.

  1. Planets

  • The eight planets in the solar system are:

  • Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune

  • All the planets revolve around the sun in their fixed paths called orbits.

  • Mercury, being nearest to the Sun, takes only 88 days to complete its revolution.

  • Venus has size and shape similar to Earth and is referred to as Earth’s twin.

  • Pluto was also a planet but recently in the meeting of the International Astronomical Union, it was declared as a dwarf planet.

  1. The Earth

  • It is the third nearest and the fifth largest planet in the solar system.

  • It is flattened at the poles and this shape is known as Geoid.

  • It’s the only planet that has conditions to support human life.

  • It is also called a blue planet because its surface is covered with about two-thirds of water.

  1. The Moon

  • It is a natural satellite and revolves around Earth in about 27 days. 

  • We have only one moon while Jupier, Saturn, Uranus and Neptune have more than one moon.

  • Moon has various depressions, depressions and mountains on its surface which cast shadows.

  • Neil Armstrong was the first man to step on the moon on 21 July 1969.

  1. Asteroids

  • Asteroids are parts of a planet which exploded when the solar system was being formed.

  • These are tiny bodies which move between the orbits of Mars and Jupiter.

  1. Meteorites

  • These are small pieces of rocks that move around the Sun and sometimes get attracted to the surface of Earth because of gravitational pull.

  • They cause a flash of fire because of the friction in the air.

  • The Milky Way appears as a whitish patch in the night sky and has millions of stars in it.

  • In ancient India, it was also called as Akash Ganga.

Galaxies are huge systems of stars, clouds, dust and glasses. There are millions of galaxies in the universe.


Important Questions and Answers

1. What is the basic difference between a star and a planet?

Ans: Stars are celestial bodies made out of gasses and have an incredibly high temperature. They dont require external sources for light on the other hand planets don't have light of their own and depend on the stars for heat and light. They are mostly made out of solid mass and rocks.


2. What are the inner and outer planets of the solar system?

Ans: Inner planets are made up of rocks and are close to the Sun. They don't have rings around them and have either no or few moons.


On the other hand, the outer planets are made up of gasses and have rings around them. They have small debris and have a considerable number of moons around them.


3. Why is earth a unique planet?

Ans: Earth is the only planet that supports human life in the solar system. Its surface is covered with about two thirds water and supports life form in a unique interdependent ecosystem. It has optimum temperature for beings existing on the Earth and is not as hot as Venus or Mercury nor as cold as Uranus or Neptune.


4. Why is only one side of the moon visible to us?

Ans: Moon takes around 27 days for both rotation and revolution and it's the same as the time taken for rotation on its axis and rate for orbiting around Earth. It is also called tidal locking and hence only one side is visible.


5. Why is the sun said to be the most important star in the solar system?

Ans: Sun forms the center of our solar system and provides the needed gravitational pull for revolution. It is the source that sustains life on Earth. It is required by the plants to conduct photosynthesis which provides food and energy to all the living beings on Earth. It provides heat to sustain life and provide an optimum temperature.


6. What is an asteroid? Where are they found?

Ans: Asteroids are parts of a planet which exploded when the solar system was being formed. These are tiny, irregular bodies which move between the orbits of Mars and Jupiter. They are also called planetoids.


7. What is the Universe?

Ans: Universe is a cluster of millions of galaxies and is a whole cosmic cluster of matter and energy. The Milky Way galaxy or Akash Ganga is a part of the universe, just like any other galaxy.


Class 6 Geography Chapter 1 Notes

The Earth in the Solar System Class 6 PDF


Starting with the first fact, which many students might already know, the Earth is a giant planet of the first four planets that are nearest to the Sun. In addition to this, it is the only planet where you can find water in liquid form. This is because Earth is present in the habitable orbit of our solar system. These habitable orbits are present in each solar system. If a planet resides inside it, we can expect life on that planet and water in liquid form. 


Furthermore, the Earth is not the only planet with water in a solid-state. Even Mars has got water in the form of ice, and they used to be water back when the Sun was young and used to be quite hotter than it is today. Our Sun that we see in the night sky is also a star that emits its light and heat. The constellations are the various patterns that we see in the night sky. Different groups of stars form them. When we connect them, they form constellations. Some of the most well-known constellations are Ursa Major and Orion. 


Solar System for Class 6

In ancient times before the maps were made and there was no GPS, people used to navigate at night with stars and constellations. Even today, in army training, cadets are trained to find directions using the constellations and the shadow. 


(Image to be added soon)


You might not know this, but you can see planets in the night too. You can look for mars in the night, which has a different color hue, more on the red side than others. The word planet came from the Greek word “Planeta,” which means wanderers. 


Fun Facts About Solar System

Our Earth gets all its heat from the Sun. The Moon that we see in the night sky is the natural satellite of the Earth. From outer space, the Earth appears to be blue as most of the Earth is covered in water, and only 1/3rd of the portion has land on which we have our countries, states, and cities. On the other hand, the Moon is our protective shield. It used to take all the hits from the asteroids, giving Earth the necessary time to form its atmosphere in millions of years.


In NCERT class 6 geography chapter 1 notes, you will also study the asteroids and how they evaporate when entering the Earth’s atmosphere. After that, you will be learning how the asteroid belt, which is present in between Mars and Jupiter, protects the Earth from bigger asteroids that move in our solar system.


Benefits of Class 6 Geography Revision Notes on Chapter 1 The Earth in the Solar System

The following is a list of reasons why you should choose Vedantu’s revision notes for Class 6 Geography Chapter 1 The Earth in the Solar System.

  • Our revision notes are at par with the CBSE Board guidelines.

  • Our notes will definitely help students score well in their Class 6 Social Science exams with the concise explanation of concepts.

  • Our revision notes have been prepared in a way that will ensure a clear understanding of the topics covered in the chapter.

Earth, the planet we live on, is the only planet that sustains life, hence making it important to learn more about this amazing planet. This chapter encapsulates the concepts surrounding Earth and its components, its neighbouring planets, its satellite (which is the moon), and so on. To prepare this chapter for your exams, you can download the revision notes for Class 6 Geography Chapter 1 The Earth in the Solar System for free from Vedantu. You can also get other study materials for Class 6 Social Science on our website and mobile app for free.

FAQs on CBSE Revision Notes for Class 6 Geography Chapter 1 - The Earth in the Solar System

1. Is there water present on Mars?

Yes, there is water on mars, but it's not the water you want to drink or take a bath in. The new findings by the NASA mars mission provide the most substantial evidence of liquid water present, which used to flow on mars intermittently. The liquid water that used to be there appears from the steep and relatively warm mountains on the mars' surface. These slopes were first discovered in 2011. 


Also, NASA has found hydrated salt particles on the surface of mars meaning there used to be water flowing in the form of a river in some time in the past. Many scientists believe that we can find frozen water beneath the surface of Mars. There are many predictions of water on Mars. Some scientists even believe that below the Moon's surface, we can find ice, which is as big as California and Texas. 

2. How does the Moon revolve around Earth and not around the Sun?

Moon is the brightest and the biggest object in our night sky. Moon also helps in making Earth the livable planet that it is right now. It makes the planet living by controlling its wobble on the axis. Thus, it results in a more stable climate. In addition to this, the Moon is the reason we have tides in the sea, it's a natural rhythm that has guided mankind millions of times, and it still does its work perfectly. 


The Moon is rotating at the same rate that it revolves around the Earth, known as synchronous rotation. As a result, we can only see the front face of the Moon in the night sky. The Moon makes a complete orbit in 27 days. The gravitational force of the Earth pulls the Moon. As a result, it moves around Earth only. But now here’s a catch, it does revolve around the Sun too. As the gravitational force of the Earth pulls it, the Earth takes the Moon along with it for the circle of the Sun. As a result, the Moon revolves around the Earth and around the Sun too.

3. What is the solar system? Explain in detail according to Class 6.

The sun and all the objects that circle it make up the solar system. Planets, asteroids, comets, and other objects revolve around the Sun. The age of the solar system is estimated to be around 4.6 billion years. The planets and their moons, as well as countless asteroids and comets, are all included. The gravity of the sun keeps all of these things in orbit around it. This indicates that it has a high gravitational pull.

4. What is an orbit accordion to Class 6 Geography?

In Class 6 Chapter 1 Geography the orbit of a planet (or satellite) is the specific and precise elliptical route in which it constantly travels (or satellite). A planet is a celestial body that spins in an orbit around a single star and receives all of its light from that star. Earth is a planetary system. A satellite is a celestial body that orbits around a planet in a certain orbit. The moon is counted as the only natural satellite of the Earth. A detailed explanation is available on the official website of  Vedantu. Students can also access the study material free of cost on the Vedantu App.

5. What is the universe?

The biggest unit in which we dwell in the universe. It's a smattering of galaxies. There is just one Universe, and all that exists inside it is contained within that Universe. Billions of stars constitute the galaxy. Like the solar system, most stars have their own families. Our galaxy, the Milky Way, is where we dwell. All the planets, asteroids, the sun, meteoroids, etc. lie in the universe.

6. What is the significance of the sun in the solar system class 6?

The Sun, eight planets, plus other celestial bodies such as satellites, meteors, comets, and asteroids make up our solar system. There is a lot of significance to the sun. Our solar system's primary source of heat and light is the Sun. All kinds of life on Earth are supported by heat and light. The planets are kept in their orbits by the Sun's gravitational force. Its gravitational force is so strong that no planet goes out of it.

7. What is the Earth?

To begin, many students may already be aware that the Earth is a huge planet and is one of the first four planets closest to the Sun. Additionally, it is the only planet on which liquid water may be found. This is due to Earth's being in our solar system's habitable orbit. Each solar system contains these livable orbits. If it contains a planet, we can expect life on that planet as well as liquid water.

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