NCERT Solutions for Class 6 Geography Chapter 1 – The Earth in the Solar System
| Category | NCERT Solutions for Class 6 |
| Subject | Geography (Social Science) |
| Chapter | Chapter 1 – The Earth in the Solar System |
1. Answer the following questions briefly.
(a) How does a planet differ from a star?
Answer: A planet and a star are two different celestial bodies, the difference is listed in the table below:
| Planet | Star |
| A planet resolves around a start. | A star is stationary and all the planets revolve around it. |
| A planet does not have a light and energy of its own but reflects the light of the star closest to it. | A star emits its own light and energy. |
| Planets are composed of rocky or gaseous substances | Stars are composed mostly of helium and hydrogen |
| Planets may be extremely cold or hot, the temperature of the planet depends on the closeness to the star | A star is a huge ball of hot gases. |
(b) What is meant by the ‘Solar System’?
Answer: The Solar System consists of a yellow star; the Sun, the eight planets, their satellites or moons revolving around them, and the asteroids within the Milky Way Galaxy. The gravitational force of the Sun binds all the celestial bodies which revolve around it.
(c) Name all the planets according to their distance from the sun.
Answer: The eight planets according to the distance from the sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
(d) Why is the Earth called a unique planet?
Answer: The earth is called the “unique” planet because it can support life. It has an atmosphere of its own with the right amount of oxygen necessary for respiration and carbon dioxide. Earth is also the only planet in the solar system which contains water, the elixir of life.
(e) Why do we see only one side of the moon always?
Answer: We can only see one side of the moon as the rotational as well as revolutional speed of the moon is equal i.e. 27 days. For the moon to complete one full revolution around the earth it takes 27 days, during this time the sun’s light illuminates only one side of the moon.
(f) What is the Universe?
Answer:The Universe is a huge body containing millions of galaxies stars and planets. It consists of matter, space and time and is extremely huge. Scientists and astronomers yet do not know the extent of the universe, but it said that the Universe is expanding.
NCERT Solutions for Class 6 Geography Chapter 1 – The Earth in the Solar System
2. Tick the correct answer.
(a) The planet known as the “Earth’s Twin” is
(i) Jupiter
(ii) Saturn
(iii) Venus
Answer
Answer: (iii) Venus
(b) Which is the third nearest planet to the sun ?
(i) Venus
(ii) Earth
(iii) Mercury
Answer
Answer: (ii) Earth
(c) All the planets move around the sun in a
(i) Circular path
(ii) Rectangular path
(iii) Elongated path
Answer
Answer: (iii) Elongated path
(d) The Pole Star indicates the direction to the
(i) South
(ii) North
(iii) East
Answer
Answer: (ii) North
(e) Asteroids are found between the orbits of
(i) Saturn and Jupiter
(ii) Mars and Jupiter
(iii) The Earth and Mars
Answer
Answer: (ii) Mars and Jupiter
NCERT Solutions for Class 6 Geography Chapter 1 – The Earth in the Solar System
3. Fill in the blanks.
(a) A group of stars forming various patterns is called a constellation.
(b) A huge system of stars is called galaxy.
(c) The Moon is the closest celestial body to our earth.
(d) The Earth is the third nearest planet to the sun.
(e) Planets do not have their own heat and light.
NCERT Solutions for Geography (Social Science)
- The Earth in the Solar System
- Globe: Latitudes and Longitudes
- Motions of the Earth
- Maps
- Major Domains of the Earth
- Major Landforms of the Earth
- Our Country India