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Stars and the Solar System Test - 12

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Stars and the Solar System Test - 12
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Weekly Quiz Competition
  • Question 1
    1 / -0
    A star like body with a long tail is called:
    Solution
    A comet is an icy small celestial body that, when passing close to the Sun, heats up and begins to outgas, displaying a visible atmosphere or coma, and sometimes also a tail. These phenomena are due to the effects of solar radiation and the solar wind upon the nucleus of the comet.
    Hence, a star like body with a long tail is called comet.
  • Question 2
    1 / -0
    Fill in the blank:

    A shooting star is a _______.
    Solution
    Shooting stars look like stars that quickly shoot across the sky, but they are not stars. A shooting star is really a small piece of rock or dust that hits Earth's atmosphere from space. It moves so fast that it heats up and glows as it moves through the atmosphere. Shooting stars are actually what astronomers call meteors. Most meteors burn up in the atmosphere before they reach the ground. However, once in a while a meteor is large enough than some of it survives and reaches Earth's surface. Then it is called a meteorite.
    Hence, shooting star is a common name for the visible path of a meteoroid as it enters the atmosphere, becoming a meteor.
  • Question 3
    1 / -0
    The first satellite to put into space by India is:
    Solution
    Aryabhata was India's first satellite, named after an Indian astronomer of the same name.
    It was launched by the Soviet Union on 19 April 1975 from Kapustin Yar using a Kosmos-3M launch vehicle. It was built by the Indian Space Research Organisation (ISRO) to gain experience in building and operating a satellite in space. The launch came from an agreement between India and the Soviet Union directed by U.R. Rao and signed in 1972.
  • Question 4
    1 / -0
    Who is regarded chief of solar system? 
    Solution
    Sun is regarded as the chief of solar system. It is because all of the other planets circle around it due to the gravitational pull because of its enormous mass.
  • Question 5
    1 / -0
    Fill in the blank:

    The planet nearest to the Sun is ________.
    Solution
    There are officially only eight planets in our solar system. The order of the planets from the Sun is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
    Hence, the planet farthest from the Sun is Mercury.

  • Question 6
    1 / -0
    Name the largest planet in the solar system.
    Solution
    The collection of eight planets and their moons in orbit round the Sun, together with smaller bodies in the form of asteroids, meteoroids, and comet is known as solar system.The largest planet in the solar system is Jupiter.
  • Question 7
    1 / -0
    What is the time taken by the Jupiter to go around the Sun?
    Solution
    Jupiter revolves or orbits around the Sun once every 11.86 Earth years, or once every 4,330.6 Earth days. Jupiter travels at an average speed of 29,236 miles per hour or 47,051 km per hour in its orbit around the Sun.
    Hence, the planet Jupiter takes 12 years to go around the Sun.
  • Question 8
    1 / -0
    Fill in the blank:

    In a constellation, ________ form a recognizable shape.
    Solution
    The stars forming a group that has a recognisable shape is called a constellation. A constellation is a group of stars that make an imaginary shape in the night sky. They are usually named after mythological characters, people, animals and objects. In different parts of the world, people have made up different shapes out of the same groups of bright stars. It is like a game of connecting the dots. In the past creating imaginary images out of stars became useful for navigating at night and for keeping track of the seasons. Because all the stars are at different distances, the constellations would look totally different to inhabitants of another planet orbiting another star.
  • Question 9
    1 / -0
    The number of planets in our solar system is
    Solution
    There are eight planets in our solar system viz. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
    Pluto is a dwarf planet.
  • Question 10
    1 / -0
    When we look towards the pole star, it appears stationary because
    Solution
    When we look towards the pole star, it appears stationary because it is pointing exactly in the north direction. The Earth spins on its axis and the pole star is almost exactly above this axis of the Earth. Hence, it appears stationary.
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