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With reference to the Rotation and Revolution of Earth, consider the following statements:
As viewed from the North Star or Pole Star the Earth turns clockwise.
Earth’s rotation is slightly slowing with time, thus the day was shorter in the past.
The revolution of the Earth in its orbit around the Sun is independent of the rotation around its axis.
Which of the above statements is/are correct?
- a)2 and 3 only
- b)1, 2 and 3
- c)1 and 2 only
- d)3 only
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
With reference to the Rotation and Revolution of Earth, consider the ...
Earth’s rotation is the rotation of the solid Earth around its own axis. The Earth rotates from West to East.
- Statement 1 is not correct: As viewed from the North Star or Pole Star the Earth turns anti- clockwise. The Earth’s axis of rotation meets its surface at the North Pole, in the northern hemisphere. The South Pole is the other point where the axis of rotation intersects its surface, in Antarctica. The Earth rotates once every twenty-four hours with respect to the Sun and once every 23 hours 56 minutes and 4 seconds with respect to the stars.
- Statement 2 is correct: Earth’s rotation is slightly slowing with time. It is taking Earth longer and longer to complete one full turn—a day—or, technically, a solar day. The solar day is gradually getting longer because Earth's rotation is slowing down ever so slightly. This is due to the tidal effect of the moon has on the Earth’s rotation. Roughly every 100 years, the day gets about 1.4 milliseconds, or 1.4 thousandths of a second, longer. Two key positions along the orbit are Perihelion– the point of closest approach to the Sun. This occurs on ~3 January, when the Sun-Earth distance is ~146 million kilometres. Aphelion– the point at which Earth is farthest from the Sun. The dates of perihelion and aphelion change slowly with time because the whole orbit rotates slowly anti-clockwise in the ecliptic plane, and the shape of the orbit, as expressed by the eccentricity, changes over time.
- Statement 3 is correct: The revolution of the Earth in its orbit around the Sun is independent of the rotation around its axis.
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Community Answer
With reference to the Rotation and Revolution of Earth, consider the ...
Rotation and Revolution of Earth:
Earth is the third planet from the Sun and is the only known planet in the universe that can sustain life. It has two main motions - rotation and revolution.
Rotation of Earth:
Rotation is the movement of Earth on its axis, which is an imaginary line passing through the North and South Pole. The rotation of Earth makes day and night. The following statement is correct regarding the rotation of Earth:
- As viewed from the North Star or Pole Star, the Earth turns counter-clockwise.
Revolution of Earth:
Revolution is the movement of Earth around the Sun in an elliptical orbit. One complete revolution of Earth around the Sun takes approximately 365.25 days, which is a year. The following statement is correct regarding the revolution of Earth:
- The revolution of the Earth in its orbit around the Sun is independent of the rotation around its axis.
Changes in Earth's Rotation:
The rotation of Earth is not constant and is slightly slowing down with time. This is due to the tidal forces exerted by the Moon and the Sun on Earth's oceans, which causes a transfer of angular momentum from Earth's rotation to the Moon's orbit. As a result, the day was shorter in the past than it is now.
Conclusion:
Hence, the correct statements regarding the rotation and revolution of Earth are:
- As viewed from the North Star or Pole Star, the Earth turns counter-clockwise.
- Earth's rotation is slightly slowing with time, thus the day was shorter in the past.
- The revolution of the Earth in its orbit around the Sun is independent of the rotation around its axis.
Therefore, option A is the correct answer.
Earth is the third planet from the Sun and is the only known planet in the universe that can sustain life. It has two main motions - rotation and revolution.
Rotation of Earth:
Rotation is the movement of Earth on its axis, which is an imaginary line passing through the North and South Pole. The rotation of Earth makes day and night. The following statement is correct regarding the rotation of Earth:
- As viewed from the North Star or Pole Star, the Earth turns counter-clockwise.
Revolution of Earth:
Revolution is the movement of Earth around the Sun in an elliptical orbit. One complete revolution of Earth around the Sun takes approximately 365.25 days, which is a year. The following statement is correct regarding the revolution of Earth:
- The revolution of the Earth in its orbit around the Sun is independent of the rotation around its axis.
Changes in Earth's Rotation:
The rotation of Earth is not constant and is slightly slowing down with time. This is due to the tidal forces exerted by the Moon and the Sun on Earth's oceans, which causes a transfer of angular momentum from Earth's rotation to the Moon's orbit. As a result, the day was shorter in the past than it is now.
Conclusion:
Hence, the correct statements regarding the rotation and revolution of Earth are:
- As viewed from the North Star or Pole Star, the Earth turns counter-clockwise.
- Earth's rotation is slightly slowing with time, thus the day was shorter in the past.
- The revolution of the Earth in its orbit around the Sun is independent of the rotation around its axis.
Therefore, option A is the correct answer.
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With reference to the Rotation and Revolution of Earth, consider the following statements: As viewed from the North Star or Pole Star the Earth turns clockwise. Earth’s rotation is slightly slowing with time, thus the day was shorter in the past. The revolution of the Earth in its orbit around the Sun is independent of the rotation around its axis. Which of the above statements is/are correct?a)2 and 3 onlyb)1, 2 and 3c)1 and 2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer?
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With reference to the Rotation and Revolution of Earth, consider the following statements: As viewed from the North Star or Pole Star the Earth turns clockwise. Earth’s rotation is slightly slowing with time, thus the day was shorter in the past. The revolution of the Earth in its orbit around the Sun is independent of the rotation around its axis. Which of the above statements is/are correct?a)2 and 3 onlyb)1, 2 and 3c)1 and 2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about With reference to the Rotation and Revolution of Earth, consider the following statements: As viewed from the North Star or Pole Star the Earth turns clockwise. Earth’s rotation is slightly slowing with time, thus the day was shorter in the past. The revolution of the Earth in its orbit around the Sun is independent of the rotation around its axis. Which of the above statements is/are correct?a)2 and 3 onlyb)1, 2 and 3c)1 and 2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for With reference to the Rotation and Revolution of Earth, consider the following statements: As viewed from the North Star or Pole Star the Earth turns clockwise. Earth’s rotation is slightly slowing with time, thus the day was shorter in the past. The revolution of the Earth in its orbit around the Sun is independent of the rotation around its axis. Which of the above statements is/are correct?a)2 and 3 onlyb)1, 2 and 3c)1 and 2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer?.
With reference to the Rotation and Revolution of Earth, consider the following statements: As viewed from the North Star or Pole Star the Earth turns clockwise. Earth’s rotation is slightly slowing with time, thus the day was shorter in the past. The revolution of the Earth in its orbit around the Sun is independent of the rotation around its axis. Which of the above statements is/are correct?a)2 and 3 onlyb)1, 2 and 3c)1 and 2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about With reference to the Rotation and Revolution of Earth, consider the following statements: As viewed from the North Star or Pole Star the Earth turns clockwise. Earth’s rotation is slightly slowing with time, thus the day was shorter in the past. The revolution of the Earth in its orbit around the Sun is independent of the rotation around its axis. Which of the above statements is/are correct?a)2 and 3 onlyb)1, 2 and 3c)1 and 2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for With reference to the Rotation and Revolution of Earth, consider the following statements: As viewed from the North Star or Pole Star the Earth turns clockwise. Earth’s rotation is slightly slowing with time, thus the day was shorter in the past. The revolution of the Earth in its orbit around the Sun is independent of the rotation around its axis. Which of the above statements is/are correct?a)2 and 3 onlyb)1, 2 and 3c)1 and 2 onlyd)3 onlyCorrect answer is option 'A'. Can you explain this answer?.
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