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Stars and the Solar System Test - 45

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Stars and the Solar System Test - 45
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  • Question 1
    1 / -0
    The planet whose period of rotation is longer than the period of revolution around the sun is 
    Solution
    Venus is the planet whose period of rotation is longer than the period of revolution around the sun. The period of rotation for Venus is 243 days to turn once on its axis whereas it takes 224.7 days to revolve around the sun.
  • Question 2
    1 / -0
    Among the following which planet takes maximum time for one revolution around the sun?
    Solution
    Jupiter takes maximum time for one revolution around the sun. 
  • Question 3
    1 / -0
    The black part of the Moon is always calm and dark which is called
    Solution
    The black part of the Moon is always calm and dark which is called Sea of tranquillity. Sea of tranquillity is not an actual sea but rater the point at which Apollo 11 first landed on when it reached the moon.
  • Question 4
    1 / -0
    Which planet is called "Evening Star"?
    Solution
    Venus is called the Evening star. Because it trails the Sun in the sky and brightens into vies immediately after the Sun sets and when the sky is dark enough.
  • Question 5
    1 / -0
    Which planet is surrounded by ring?
    Solution
    Saturn is surrounded by a system of rings which are bundles of particles of varying shape and size revolving around the planet. These rings are not visible with the naked eye but visible through a telescope.

  • Question 6
    1 / -0
    On which planet would one witness sunrise in the west?
    Solution
    Venus rotates on its axis the opposite way that most planets rotate. That means on Venus, the sun would appear to rise in the west and set in the east.
  • Question 7
    1 / -0
    Consider the following statements:
    1. The albedo of an object determines its visual brightness when viewed with reflected light.
    2. The albedo of Mercury is much greater than the albedo of the Earth.
    Which of the statement(s) given above is/are correct?
    Solution
    Albedo is the fraction of the incident sunlight that is reflected from surface of an object. When an object reflects most of the light that hits it and looks bright then it has high albedon. ex: Snow and ice have high albedo.
    Albedo of mercury and the earth is 0.142 and 0.367 respectively.
    Hence, Statement 1 is correct. 
  • Question 8
    1 / -0
    Which one of the following planets is nearest to the earth?
    Solution
    Venus is nearest planet to Earth. Although distance is not fixed and it may vary from 38 million to 261 million Km depending upon orbital motion. 
  • Question 9
    1 / -0
    Which of the following does not belong to solar system?
    Solution
    The solar system consists of eight planets and a host of asteroids, comets, and meteors. Nebulae is an interstellar cloud of dust in outer space.
  • Question 10
    1 / -0
    Which of the following planets have rings around it
    Solution
    Saturn only has ring around it. Saturn's rings are made of ice and rock. These pieces vary in size. Some are as small as a grain of sand.
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