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NCERT Solutions for Class 8 Geography Chapter 1 - The Earth in the Solar System

Q1. Answer the following questions briefly.
(a) How does a planet differ from a star?
Ans: Planet differs from star in the following manner:
NCERT Solutions for Class 8 Geography Chapter 1 - The Earth in the Solar System

(b) What is meant by the ‘Solar System’?
Ans: The term Solar System refers to the family of the sun. The Sun, eight planets, satellites, and some other celestial bodies known as asteroids, comets, and meteoroids together from the Solar System.

Solar SystemSolar System

(c) Name all the planets according to their distance from the sun.
Ans: Planets according to their distance from the sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

(d) Why is the Earth called a unique planet?
Ans: Earth is called a unique planet because it is the only planet where life exists. It has favourable conditions for supporting life. 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.

(e) Why do we see only one side of the moon always?
Ans: The moon moves around the earth in about 27 days. It takes exactly the same time to complete one spin. Therefore, only one side of the moon is visible to us on the earth.

(f) What is the Universe?
Ans: A galaxy is a huge system of billions of stars, and clouds of dust and gases. Millions of such galaxies make up the universe.


Q2. Tick the correct answer.
(a) The planet known as the “Earth’s Twin” is
(i) Jupiter
(ii) Saturn
(iii) Venus
Ans: (iii) Venus

Earth and its TwinEarth and its Twin

(b) Which is the third nearest planet to the sun?
(i) Venus
(ii) Earth
(iii) Mercury
Ans: (ii) Earth

(c) All the planets move around the sun in a
(i) Circular path
(ii) Rectangular path
(iii) Elongated path
Ans: (i) Elongated path

(d) The Pole Star indicates the direction to the
(i) South
(ii) North
(iii) East
Ans: (ii) North

(e) Asteroids are found between the orbits of
(i) Saturn and Jupiter
(ii) Mars and Jupiter
(iii) The Earth and Mars
Ans: (ii) Mars and Jupiter


Q3. Fill in the blanks.
(a) A group of ______ forming various patterns is called a ______.
Ans: Stars, constellation

(b) A huge system of stars is called______.
Ans: Galaxy

GalaxyGalaxy

(c) ______ is the closest celestial body to our earth.
Ans: The Moon

(d) ______ is the third nearest planet to the Sun.
Ans: Earth

(e) Planets do not have their own ______ and ______.
Ans: Heat, Light

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FAQs on NCERT Solutions for Class 8 Geography Chapter 1 - The Earth in the Solar System

1. What is the Solar System?
Ans. The Solar System consists of the Sun, eight planets, dwarf planets, moons, asteroids, comets, and other celestial bodies that orbit around the Sun due to its gravitational pull.
2. How many planets are there in the Solar System?
Ans. There are eight planets in the Solar System, namely Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
3. What is the position of Earth in the Solar System?
Ans. Earth is the third planet from the Sun and is located between Venus and Mars. It is the only planet known to have life and a diverse range of living organisms.
4. What are the characteristics of the Solar System?
Ans. The Solar System is vast and diverse. It consists of various celestial bodies that vary in size, shape, composition, and distance from the Sun. The eight planets have different characteristics such as temperature, atmospheric conditions, and number of moons.
5. What is the significance of the Solar System?
Ans. The Solar System is significant as it provides a home for various living organisms, including humans. It also helps us understand the origins of the universe and the evolution of the planets. Studying the Solar System can provide insights into the composition and behavior of celestial bodies and help us prepare for potential threats from asteroids or comets.
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