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ACT Exam  >  ACT Questions  >  (Assertion): The same face of the Moon is alw... Start Learning for Free
(Assertion): The same face of the Moon is always presented to the Earth
(Reason): The Moon rotates about its own axis in 231/2 days which is about the same time that it takes to orbit the Earth
  • a)
    Both A are R are true R is the correct explanation of A
  • b)
    Both A and R are true but R is not a correct explanation of A
  • c)
    A is true but R is false
  • d)
    A is false but R is true
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
(Assertion): The same face of the Moon is always presented to the Eart...
The assertion (A) is true because the same face of the Moon is indeed always presented to the Earth due to synchronous rotation.
However, the reason (R) is false. The Moon's rotation period is approximately 27.3 days, which is roughly the same as its orbital period around the Earth, not 23.5 days as stated. The synchronization of rotation and orbit is the reason behind the phenomenon, but the incorrect value provided in the reason makes it false. Therefore, option (c) is the correct choice. Thank you for bringing this to my attention.
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Most Upvoted Answer
(Assertion): The same face of the Moon is always presented to the Eart...
Understanding the Assertion and Reason
The assertion states that the same face of the Moon is always presented to the Earth. This is indeed true. The Moon is in synchronous rotation with Earth, meaning it takes the same amount of time to rotate on its axis as it does to orbit the Earth.
Explanation of the Assertion
- The Moon completes one full rotation on its axis approximately every 27.3 days.
- It also takes about 27.3 days to complete one orbit around the Earth.
- This synchronized motion is why we always see the same side of the Moon from Earth.
Evaluating the Reason
- The reason provided states that the Moon rotates about its own axis in 231/2 days.
- This duration is inaccurate; the correct period is approximately 27.3 days, not 231/2 days.
- Therefore, while the reason's concept is aligned with the assertion, the specifics are incorrect.
Conclusion
- The assertion is true as it correctly describes the Moon's synchronous rotation.
- The reason is false due to the incorrect duration of the Moon's rotation period.
Thus, the correct option is C: the assertion is true, but the reason is false. This distinction clarifies the relationship between the two statements, reinforcing the importance of accuracy in scientific explanations.
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(Assertion): The same face of the Moon is always presented to the Earth(Reason): The Moon rotates about its own axis in 231/2 days which is about the same time that it takes to orbit the Eartha)Both A are R are true R is the correct explanation of Ab)Both A and R are true but R is not a correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?
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