Grade 6 NCERT Geography Chapter 1 presentation

Grade 6 Geography Chapter 1 The Earth in the Solar System

1. Grade 6 Geography CHAPTER 1 THE EARTH IN THE SOLAR SYSTEM By Nidhi Goyal

2. Earth and the whole universe is full of wonder Sun, Moon, planets and many more things

3. What we are going to study in this chapter ? Celestial body The solar system The sun The earth The moon Planets Asteriods and Meteoroids

4. Celestial Bodies In the night sky you see bright stars and moon. However the shape of the moon keep changing. Full moon= Purnima ; New moon= Amavasya But why don't we see them during day time ? Due to the bright sunshine. The sun, the moon and all those objects shining in the night sky are called celestial bodies.

5. Celestial bodies Some celestial bodies are very big and hot. They are made up of gases. They have their own heat and light, which they emit in large amounts. These celestial bodies are called stars. For e.g. The sun is a star. If sun is a star then why others stars are not so bright like sun. Why they are so tiny, why don't we feel their heat ? REASON IS DISTANCE E.G. Airplane also looks small when it is flying at a great height

6. CONSTELLATIONS The group of star which forms various patterns. They are called constellations

7. constellation One of the most easily recognizable constellation is SAPTARISHI In ancient times, people used to determine directions during the night with the help of stars. The North star indicates the north direction. It is also called the Pole Star.

8. Some celestial bodies do not have their own heat and light. They are lit by the light of the stars. Such bodies are called planets. The word ‘planet’ comes from the Greek word “ Planetai ” which means ‘wanderers’. The Earth is a planet and Moon is the Satellite of the Earth. Similarly, there are many other planets , together forming the SOLAR SYSTEM

9. The solar system The sun and its family is known as solar system The sun, eight planets, satellite and some other celestial bodies known as asteroids and meteroids form the solar system.

10. Inner planets are very close to the sun. They are made up of rocks. Mercury, Venus, Earth and Mars Outer planets are very far from the sun and are huge planets made up of gases and liquids. Jupiter, Saturn, Uranus and Neptune

11. sun

12. planets There are eight planets in our solar system, In order of their distance from the sun they are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Planets move in their fixed paths , they are known as orbits.

13. INTERESTING FACTS ABOUT PLANETS Mercury is nearest to the sun. Venus is considered as ‘Earth’s-twin’ because its size and shape are very much similar to that of the earth. Till recently (August 2006), International Astronomical Union, a decision was taken that Pluto like other celestial objects (Ceres, 2003 UB313) discovered in recent past may be called ‘dwarf planets.”

14. The Earth It is the third nearest planet to the sun. In size it is the fifth largest planet. It is slightly Flattened at the poles. Therefore it is described as a Geoid. Earth supports life. It is also called as blue planet.

15. The moon Moon is t he satellite of the Earth. A Celestial body that moves around the planet. Its diameter is only one-quarter that of the earth. Why does it appear so big to us? Because it is nearer to Earth as compared to other celestial body. It is about 3,84,400 km from earth. Moon takes around 27 days to complete one round around the earth. The spinning time of the earth is same as the earth. Therefore, we always see the same face of the moon.

16. satellite

17. asteroids Apart from the stars, planets and satellites, there are numerous tiny bodies which also move around the sun. They are found between the orbits of Mars and Jupiter.

18. METEROIDS The small pieces of rocks which move around the sun are called meteoroids. Sometimes these meteoroids come near the earth and tend to drop upon it. During this process due to friction with the air they get heated up and burn. It causes a flash of light. Sometimes, a meteor without being completely burnt, falls on the earth and creates a hollow

19. Thank you