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Class III - social: The Earth in the Universe
One Word Answer Questions:
Q) How many planets are there in a solar system?
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Q) Which is vast expanse of space?
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Q) Why stars are look so small?
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Q) What is constellations?
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Q) Which is brightest object in the sky at night?
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Short Answer Questions:
Q) Describe the Universe.
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Q) What are stars?
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Q) What are constellations?Name a few well known constellations.
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Q) What is the solar syatem?
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Q) What are Planets?
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Long Answer Questions:
Q) Explain about Planets?
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Q) Explain about the Universe?
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Q) Write about Stars and Constellations?
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Q) Expain about the Sun and the Solar System?
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Q) Expain about the Moon and Earth?
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The Universe

  • Universe is a vast expanse of space.
  • This space contains various heavenly bodies like stars, planets and moon. It also contains dust, gases and pieces of rock.
  • The Earth is like a grain of salt in the vast universe.

  • Universe1
    The Universe: Earth is like a grain of salt


  • At night we see thousands of twinkling lights in the sky.These twinkling lights are called Stars.
  • A star is a huge ball of hot, burning gases.
  • It gives out heat and light.
  • There are millions and millions of stars in the Universe. These stars are very far away from us. That is why they look so small.
  • Universe2


  • Some groups of stars appear to make patterns in the sky. These groups of stars are called Constellations.
  • The constellations are named after creatures and persons from myths or legends.
  • Some of the well-known constellations are Leo, Ursa Major (also called the Great Bear) and Orion.
  • The Great Bear is known as the Saptarishi in India.
  • Universe3

Solar System

  • The Sun is a star. It is a huge ball of very hot gases.
  • It is the star closest to the Earth. The Earth gets light and heat from the Sun. Without the Sun there would be no life on Earth.
  • The Sun has eight planets circling it. They are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
  • The Sun and the planets together form the Solar System.
  • Universe4
    The Solar System: the Sun and the planets

The Planets

  • Planets are heavenly bodies that travel around a star. They are usually round in shape. Some of them are made of rocks, while some are made of gases
  • Planets do not have heat or light of their own. They get their heat or light from the star they move around.
  • Unlike the stars, planets do not twinkle when seen from the Earth. They shine with a steady light.

The Moon

  • The moon is the brightest object in the sky at night. It is our nearest neighbour in space.
  • The Moon is a ball of rock that travels around the Earth. It has no light of its own and reflects the light of the Sun.

The Earth

  • The Earth is the third planet from the Sun. It is the only known planet to have life.
  • The surface of the Earth is made up of land and water.

  • Universe5
    The Earth and the Moon
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