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NCERT Solutions for Class 6 Geography Chapter 1 - The Earth in the Solar System

Chapter 1 - The Earth in the Solar System



Question 1
Answer the following questions briefly.
(a) How does a planet differ from a star?
(b) What is meant by the ‘Solar System’?
(c) Name all the planets according to their distance from the sun.
(d) Why is the Earth called a unique planet?
(e) Why do we see only one side of the moon always?
(f) What is the Universe?

Answer
(a)
Star
Planet
Some celestial bodies are made up of gases. They have their own heat and light, which they emit in amounts. These celestial bodies are called stars.
Some celestial bodies do not have their own heat and light. They are lit by light of stars. Such bodies are called planets.
Example: Sun
Example: Earth, Jupiter, etc.


(b) The sun, eight planets, satellites and some other celestial bodies known as steroids and meteoroids form the solar system.
(c) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
(d) The earth is neither too hot nor too cold. It has water and air, which are very essential for our survival. The air has life-supporting gases like oxygen. Because of these reasons, the earth is a unique planet in the solar system.
(e) 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.
(f) Universe is the collection of millions of galaxies. 

Question 2
Tick the correct answer.
(a) The planet known as the “Earth’s Twin” is
(i) Jupiter          (ii) Saturn          (iii) Venus
(b) Which is the third nearest planet to the sun ?
(i) Venus           (ii) Earth             (iii) Mercury
(c) All the planets move around the sun in a
(i) Circular path    (ii) Rectangular path       (iii) Elongated path
(d) The Pole Star indicates the direction to the
(i) South        (ii) North            (iii) East
(e) Asteroids are found between the orbits of
(i) Saturn and Jupiter     (ii) Mars and Jupiter       (iii) The Earth and Mars

Answer
(a) (iii) Venus
(b) (ii) Earth
(c) (iii) Elongated path
(d) (ii) North
(e) (ii) Mars and Jupiter

Question 3
Fill in the blanks.
(a) A group of _____ forming various patterns is called a _____.
(b) A huge system of stars is called_____.
(c) _____ is the closest celestial body to our earth.
(d) _____ is the third nearest planet to the sun.
(e) Planets do not have their own _____ and _____.

Answer
(a) A group of star forming various patterns is called a constellation.
(b) A huge system of stars is called galaxy.
(c) Moon is the closest celestial body to our earth.
(d) Earth is the third nearest planet to the sun.
(e) Planets do not have their own heat and light.

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