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Motions of the Earth Test - 4

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Motions of the Earth Test - 4
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Weekly Quiz Competition
  • Question 1
    1 / -0
    A year was fixed as the time taken by the earth to complete one revolution of the______
    Solution
    Earth spins around its axis, just as a top spins around its spindle. This spinning movement is called Earth's rotation. At the same time that the Earth spins on its axis, it also orbits, or revolves around the Sun. This movement is called revolution.
  • Question 2
    1 / -0
    __________ are caused by the rotation of the earth on its axis.
    Solution

    • The Earth experiences days and nights as a result of the planet spinning on its axis.
    • As the planet spins, the part that is facing the sun experiences day, while it is a night for the part facing away from the sun.
    • The alternation between day and night is caused by the rotation of the Earth on its axis.
    • If the Earth did not rotate as it does, the day/night cycle would be very different or possibly even nonexistent. 
  • Question 3
    1 / -0
    The speed of revolution of the Earth in its orbit round the Sun is _______________.
    Solution
    The Earth travels about 107,000 kilometers per hour. This means that our planet moves around the Sun at an average speed of 30 kilometers per second. Earth's speed is not constant as the Earth has an elliptical orbit. When the Earth is the closest to the Sun (perihelion), it moves the fastest.
  • Question 4
    1 / -0
    The earth while orbiting makes various angles with the sun's rays. On 22nd December, the rays are vertical on earth at _______.
    Solution
    • Sun rays falling vertically move between 23 and 1/2 degrees north and 23 and 1/2 degrees south latitudes throughout the year. On 22nd december, the sun rays fall vertically at the 23 1/2 degrees south.
  • Question 5
    1 / -0
    Earth take 365 days to ________________.
    Solution
    Rotation of the earth is the movement around its own axis of rotation, thus rotation is only for 24 hrs . Revolution is the movement around the sun in a particular orbit which takes 365 days.
  • Question 6
    1 / -0
    There is a continuous daylight at the South Pole during the ______________.
    Solution
    • The winter solstice falls on 22nd December during which there is continuous daylight on the South pole and continuous darkness at the North pole. Hence option D is correct.
    • During summer solstice i.e. 21st June, there is continuous daylight at the North pole.
    • Equinox refers to an equal period of darkness and daylight.
  • Question 7
    1 / -0
    In which of the following year the month of February gets 29 days?
    Solution

  • Question 8
    1 / -0
    The earth moves around the sun at a speed of about ___________.
    Solution

  • Question 9
    1 / -0
    The position of the earth on $$21st$$ June is called ______________.
    Solution

  • Question 10
    1 / -0
    Vernal Equinox occurs on ?
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