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The Earth in the Solar System Test - 7

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The Earth in the Solar System Test - 7
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Asteroid or planetoids are _____________.
    Solution
    • Asteroids and planetoids are small bodies of varying sizes ranging from few kilometres to few hundred kilometres of diameter. They are found in a large number in a belt between Mars and Jupiter and they revolve around the sun like planets but are not large enough to be called planets.
    • Sometimes very small asteroids enter into earth's atmosphere. If these bodies reach the earth's surface then they are called meteorites. Most of the time they get burned up due to the friction caused by the atmosphere of the earth and thus appear like shooting stars.
    • Hence option D is correct.
  • Question 2
    1 / -0
    Galaxies are present in _______.
    Solution
    A galaxy is a huge system of billions of stars, and clouds of dust and gases. Our solar system is also a part of a galaxy Milky way. There are millions of such galaxies that make the Universe.

  • Question 3
    1 / -0
    Natural satellite of the earth is :
    Solution
    • Moon is the only satellite of the Earth which revolves around the Earth.
  • Question 4
    1 / -0
    Heavenly bodies which radiate heat and light are called?
    Solution
    A luminous ball of gas, mostly hydrogen and helium, held together by its own gravity is known as star. In the core of stars, nuclear fusion reactions occur. These reactions support the star against gravity and produce photons and heat, as well as small amounts of heavier elements. Stars are heavenly bodies which radiate heat and light. The closest star to Earth is sun.
  • Question 5
    1 / -0
    Select the correct statement.
    Solution
    A group of billions of stars is called galaxy. There are 100 billion galaxies in the universe. Milky Way is our own galaxy. It contains about 100 billion stars and one of these is our Sun. The Sun is at the center of the Solar System. Planets and other celestial bodies revolve around the Sun. The Sun, planets, satellites and smaller objects such as asteroids and comets make up the solar system.
  • Question 6
    1 / -0
    The Milky Way galaxy also called as _______.
    Solution
    Milky Way galaxy is often known as Akash Ganga in Hindi. This is because at the clear night, the entire galaxy looks like a white and wide river especially like River Ganga. This river shaped being in the sky is named as Akash which means sky. This is why it is called as Akash Ganga. 
  • Question 7
    1 / -0
    What is Milky Way?
    Solution
    Milky Way is a galaxy. Galaxies are huge collections of stars; dust and gas. They contain several million of stars. Their size can range from few thousand to several hundred thousand light years. They have different shapes and brightness. They can be found alone, in pairs or in clusters. The galaxy of Earth is called Milky Way. It is also known as Akash Ganga.
  • Question 8
    1 / -0
    Choose the odd one out.
    Solution
    There are eight planets in our solar system. These are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
    These are divided into two categories: Inner Planets and Outer Planets
    Inner Planets - These planets are very close to the Sun. They are made up of rocks. Mercury, Venus, Earth, and Mars are called Inner Planets.
    Outer Planets - These are very far from the Sun. These are huge planets made up of gases and liquids. Jupiter, Saturn, Uranus, and Neptune are outer planets
    As in given options Mars, Mercury and Venus are Inner Planets and Uranus is Outer Planet.
    So the answer is Uranus.
  • Question 9
    1 / -0
    Stars appear in the sky in the form of clusters called ________.
    Solution
    Stars appear in the sky in the form of clusters called galaxies. Galaxy contain several million of stars. Their size can range from few thousand to several hundred thousand light years. They have different shapes and brightness. They can be found alone, in pairs or in clusters. There are total 100 billion galaxies. The galaxy of our solar system is called Milky Way.
  • Question 10
    1 / -0
    Asteroids revolve around the Sun between the orbits of __________.
    Solution
    • The asteroid belt in the Solar Sytem is between the orbits of planets Mars and Jupiter. It is located about 2.2 to 3.2 Astronomical Units (AU) from the Sun in which many small bodies orbit the sun.

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