Class 6 Social Science - The Earth Our Habitat - Chapter The Earth in the Solar System NCERT Solutions | Fill in the blanks. (a) A group of __
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 ___________________.
a) Star, Constellation
The pattern formed by the stars in the night sky is called constellation. The star in each constellation are named after letters in the Greek alphabet. The brightest star in each constellation is known as Alpha, the next is Beta and so on. So, Alpha Pegasi is the brightest star in Pegasus, the flying horse. Without constellations, it would be hard to locate the stars in the night sky, but there is no real link between the stars in a constellation; they are completely imaginary patterns. The Big Dipper, also known as Great Bear or Ursa Major, is one of the best known constellations in the Northern sky. It points towards Pole star, indicating north. Example: The Great Bear, the Water Snake (Hydra), the Little Bear (Ursa Minor).
b) Galaxy
The gigantic collection of stars, known as galaxy. It is huge system of billions of stars and clouds of dust & gases. The galaxy in which we live is Milky Way, it gets its name because we see it as a milky white band across the night sky. Galaxy is just one of many millions of similar giant groups of stars, scattered throughout the Universe. There are three types of galaxies:
1. Spiral galaxy: It consists of flat disk with a bulging center and surrounding spiral arms. When a spiral galaxy has a bright line (or bar) running through it, then it is called ‘barred spiral galaxy’.
2. Elliptical galaxy: They are oval shaped, but stretch longer along one axis. They may be nearly circular and are so elongated that they take on a cigar like appearance.
3. Irregular galaxy: They have little or no definite structure because they are within the gravitational influence of other galaxies closed by.
c) Moon Moon is the closest celestial to our earth. It is the only natural satellite of the Earth. Moon is about 3, 84,400 km away from the Earth. The Moon takes 27 days to complete one orbit around the Earth. It takes exact time to spin or rotate in its axis. Moon is the fifth largest natural satellite in the solar system and is second densest satellite after Io, a satellite of Jupiter. Its mass is approximately one eightieth that of Earth. Moon is close to Earth so it looks much larger than the stars.
d) Earth
Earth is the 3 rd nearest planet to the sun. 1 st nearest planet is Mercury and 2 nd is Venus, 3 rd is Earth, 4 th is Mars, 5 th is Jupiter, 6 th is Saturn, 7 th Uranus and then the farthest planet Neptune.
e) Heat, light
Planets do not have their own heat and light. They receive heat and light from the sun. As they do not have their own heat and light, so that is the reason they do not twinkle like the stars do. They don’t twinkle because planets appear big enough so that the refraction of light is not noticeable and the lights from the planet arrives as a steadily stream because of its closeness, not with speedy, intermittent break.
More Questions From Class 6 Social Science - The Earth Our Habitat - Chapter The Earth in the Solar System
- Q:-
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 - Q:-
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?
Popular Questions of Class 6 Social Science - The Earth Our Habitat
- Q:-
Answer the following questions briefly.
(a) What is the true shape of the earth?
(b) What is a globe?
(c) What is the latitudinal value of the Tropic of Cancer?
(d) What are the three heat zones of the Earth?
(e) What are parallels of latitude and meridians of longitude?
(f) Why does the torrid zone receive maximum amount of heat?
(g) Why is it 5.30 p.m. in India and 12.00 noon in London? - Q:-
Answer the following questions briefly.
(a) What is the angle of inclination of the earth’s axis with its orbital plane?
(b) Define rotation and revolution.
(c) What is a leap year?
(d) Differentiate between the Summer and Winter Solstice.
(e) What is an equinox?
(f) Why does the Southern Hemisphere experience Winter and Summer Solstice in different times than that of the Northern Hemisphere?
(g) Why do the poles experience about six months day and six months night? - Q:-
Answer the following questions briefly.
(a) What are the three components of a map?
(b) What are the four cardinal directions?
(c) What do you mean by the term ‘the scale of the map’?
(d) How are maps more helpful than a globe?
(e) Distinguish between a map and a plan.
(f) Which map provides detailed information?
(g) How do symbols help in reading maps? - Q:-
Answer the following questions briefly.
(a) What are the four major domains of the earth?
(b) Name the major continents of the earth.
(c) Name the two continents that lie entirely in the Southern Hemisphere.
(d) Name the different layers of atmosphere.
(e) Why is the earth called the ‘blue planet’?
(f) Why is the Northern Hemisphere called the Land Hemisphere?
(g) Why is the Biosphere important for living organisms? - Q:-
Answer the following questions briefly.
(a) What are the major landforms?
(b) What is the difference between a mountain and a plateau?
(c) What are the different types of mountains?
(d) How are mountains useful to man?
(e) How are plains formed?
(f) Why are the river plains thickly populated?
(g) Why are mountains thinly populated? - Q:-
Answer the following questions briefly.
(a) Name the major physical divisions of India.
(b) India shares its land boundaries with seven countries. Name them.
(c) Which two major rivers fall into the Arabian Sea?
(d) Name the delta formed by the Ganga and the Brahmaputra.
(e) How many States and Union Territories are there in India? Which states have a common capital?
(f) Why do a large number of people live in the Northern plains?
(g) Why is Lakshadweep known as a coral island? - Q:-
Answer the following questions briefly.
(a) Which winds bring rainfall in India? Why is it so important?
(b) Name the different seasons in India.
(c) What is natural vegetation? - Q:-
Tick the correct answers.
(a) The value of the prime meridian is
(i) 90° (ii) 0° (iii) 60°(b) The frigid zone lies near
(i) the Poles (ii) the Equator (iii) the Tropic of Cancer(c) The total number of longitudes are
(i) 360 (ii) 180 (iii) 90(d) The Antarctic circle is located in
(i) the Northern hemisphere
(ii) the Southern hemisphere
(iii) the Eastern hemisphere(e) Grid is a network of
(i) parallels of latitudes and merdians of longitudes
(ii) the Tropic of Cancer and the Tropic of Capricorn
(iii) the North Pole and the South Pole - Q:-
Tick the correct answers.
(a) The movement of the earth around the sun is known as
(i) Rotation (ii) Revolution (iii) Inclination(b) Direct rays of the sun fall on the equator on
(i) 21 March (ii) 21 June (iii) 22 December(c) Christmas is celebrated in summer in
(i) Japan (ii) India (iii) Australia(d) Cycle of the seasons is caused due to
(i) Rotation (ii) Revolution (iii) Gravitation - Q:-
Tick the correct answers.
(a) Maps showing distribution of forests are
(i) Physical map (ii) Thematic Map (iii) Political map(b) The blue colour is used for showing
(i) Water bodies (ii) Mountains (iii) Plains(c) A compass is used –
(i) To show symbols (ii) To find the main direction (iii) To measure distance(d) A scale is necessary
(i) For a map (ii) For a sketch (iii) For symbols
Recently Viewed Questions of Class 6 Social Science - The Earth Our Habitat
- Q:-
Tick the correct answers.
(a) Maps showing distribution of forests are
(i) Physical map (ii) Thematic Map (iii) Political map(b) The blue colour is used for showing
(i) Water bodies (ii) Mountains (iii) Plains(c) A compass is used –
(i) To show symbols (ii) To find the main direction (iii) To measure distance(d) A scale is necessary
(i) For a map (ii) For a sketch (iii) For symbols - Q:-
(a) The mountain range that separates Europe from Asia is
(i) the Andes (ii) the Himalayas (iii) the UralsTick the correct answers.
(b) The continent of North America is linked to South America by
(i) an Isthmus (ii) a Strait (iii) a Canal(c) The major constituent of atmosphere by per cent is
(i) Nitrogen (ii) Oxygen (iii) Carbon dioxide(d) The domain of the earth consisting of solid rocks is
(i) the Atmosphere (ii) the Hydrosphere (iii) the Lithosphere(e) Which is the largest continent?
(i) Africa (ii) Asia (iii) Australia - Q:-
Answer the following questions briefly.
(a) Which winds bring rainfall in India? Why is it so important?
(b) Name the different seasons in India.
(c) What is natural vegetation? - Q:-
Tick the correct answers.
(a) The movement of the earth around the sun is known as
(i) Rotation (ii) Revolution (iii) Inclination(b) Direct rays of the sun fall on the equator on
(i) 21 March (ii) 21 June (iii) 22 December(c) Christmas is celebrated in summer in
(i) Japan (ii) India (iii) Australia(d) Cycle of the seasons is caused due to
(i) Rotation (ii) Revolution (iii) Gravitation - Q:-
Tick the correct answers.
(a) The world’s highest rainfall occurs in
(i) Mumbai (ii) Asansol (iii) Mawsynram(b) Wild goats and snow leopards are found in
(i) Himalayan region
(ii) Peninsular region
(iii) Gir forests(c) During the south west monsoon period, the moisture laden winds blow from
(i) land to sea (ii) sea to land (iii) plateau to plains - Q:-
Answer the following questions briefly.
(a) What is the angle of inclination of the earth’s axis with its orbital plane?
(b) Define rotation and revolution.
(c) What is a leap year?
(d) Differentiate between the Summer and Winter Solstice.
(e) What is an equinox?
(f) Why does the Southern Hemisphere experience Winter and Summer Solstice in different times than that of the Northern Hemisphere?
(g) Why do the poles experience about six months day and six months night? - Q:-
Fill in the blanks.
1. A ___________ is an unbroken flat or a low-level land.
2. The Himalayas and the Alps are examples of _______________types of mountains.
3. _____________ areas are rich in mineral deposits.
4. The _________________ is a line of mountains.
5. The ____________areas are most productive for farming. - Q:-
Fill in the blanks.
(a) The deepest point on the earth is _____________ in the Pacific Ocean.
(b) The _____________ Ocean is named after a country.
(c) The _____________ is a narrow contact zone of land, water and air that supports life.
(d) The continents of Europe and Asia together are known as _____________.
(e) The highest mountain peak on the earth is _____________. - Q:-
Answer the following questions briefly.
(a) What is the true shape of the earth?
(b) What is a globe?
(c) What is the latitudinal value of the Tropic of Cancer?
(d) What are the three heat zones of the Earth?
(e) What are parallels of latitude and meridians of longitude?
(f) Why does the torrid zone receive maximum amount of heat?
(g) Why is it 5.30 p.m. in India and 12.00 noon in London? - Q:-
Tick the correct answers.
(a) The value of the prime meridian is
(i) 90° (ii) 0° (iii) 60°(b) The frigid zone lies near
(i) the Poles (ii) the Equator (iii) the Tropic of Cancer(c) The total number of longitudes are
(i) 360 (ii) 180 (iii) 90(d) The Antarctic circle is located in
(i) the Northern hemisphere
(ii) the Southern hemisphere
(iii) the Eastern hemisphere(e) Grid is a network of
(i) parallels of latitudes and merdians of longitudes
(ii) the Tropic of Cancer and the Tropic of Capricorn
(iii) the North Pole and the South Pole
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