6th Std 1. The Earth in the solar system

Cambridge - 6th Grade Social Science - Geography 1st Chapter
The Earth in the Solar System.
The Earth - While Earth is only the fifth largest planet in the solar system, it is the only world in our solar system with liquid water on the surface. Just slightly larger than nearby Venus, Earth is the biggest of the four planets closest to the Sun, all of which are made of rock and metal.
Earth is the fifth largest of the planets in the solar system. It's smaller than the four gas giants — Jupiter, Saturn, Uranus and Neptune — but larger than the three other rocky planets, Mercury, Mars and Venus.

1. Grade -6- social science geography- 1 – earth in the solar system Prepared By : Navya Rai

2. Introduction The universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy. The universe is approximately 93 billion light years in diameter. It has been expanding since its creation

3. Milky way galaxy Our Solar system is a member of galaxy called the Milky Way or Akash Ganga .

4. constellation Stars make certain patterns which look like mythological figures. Such patterns made by stars are known as constellations.

5. Solar system In ancient time, the early astronomers believed in geocentric theory. The sun, eight planets, satellites and some other celestial bodies known as asteroids and meteoroids form the solar system. In 16 th century Nicolas Copernicus presented the heliocentric theory.

6. sun The sun is in the centre of the solar system. It is huge and made up of extremely hot gases. The sun is about 150 million km away from earth. The eight planets revolves around the Sun on elliptical paths called orbits.

7. planets Planets are celestial bodies that orbit around the sun. Planets do not have their own light and heat of their own but appear to shine in the darkness because they reflects the Sun’s light. 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.

8. Conti.. All the eight planets of the solar system move around the sun in fixed paths. These paths are called orbits. Mercury is nearest to the sun. It takes only about 88 days to complete one round along its orbit. Venus is considered as ‘Earth’s-twin’ because its size and shape are very much similar to that of the earth.  Smallest planet- Mercury Largest planet - Jupiter

9. Conti.. The four terrestrials are – Mercury, Venus , Earth and Mars. The four gas giants are- Jupiter, Saturn, Uranus and Neptune. The planet spins its own axis known as rotation. – A planet Day One complete movement around the sun called a revolution. – A Planet year Dwarf planets in the solar system - Eris, Dysmonia , Pluto, Makemake,Haumea

10. earth The earth is the third nearest planet to the sun. In size, it is the fifth-largest planet . It is slightly flattened at the poles. The Conditions favourable to support life are probably found only on the earth. It has water and air, which are very essential for survival. The air has life-supporting gases like oxygen. From the outer space, the earth appears blue because its two-thirds surface is covered by water. It is also called a blue planet .

11. moon Moon is the earth’s satellite. Its diametre is only one-quarter that of the earth. It appears so big because it is nearer to our planet than other celestial bodies. It is about 3,84,400 km away from us. The moon moves around the earth in about 27 days. It takes exactly the same time to complete one spin. As a result, only one side of the moon is visible to us on the earth. The moon does not have conditions favourable for life. It has mountains, plains and depressions on its surface. These cast shadows on the moon’s surface.

12. Other members of the solar system

13. Meteorites

14. Thank you