With reference to the phases of the Moon, consider the following statements: 1. The Full Moon can be seen only once in about a month’s time. 2. The New Moon night is also known as Poornima. 3. On Amavasya, the night sky can be watched best if it is a clear night. Which of the statements given above is/are correct?

The correct option is (c) 1 and 3 only Explanation The phases of the Moon are determined by the relative positions of the Sun, Earth, and Moon. A complete cycle of lunar phases, known as a synodic month, takes approximately 29.5 days. Statement-wise Analysis: - Statement 1 is Correct: The Full Moon occurs when the Earth is located between the Sun and the Moon, allowing the entire sunlit side of the Moon to be visible from Earth. Since the lunar cycle is roughly one month long (29.5 days), the Full Moon is typically seen only once during this period. - Statement 2 is Incorrect: The terminology for lunar phases in the Indian context distinguishes between the Full Moon and the New Moon. The Full Moon night is known as Poornima. The New Moon night is known as Amavasya. - Statement 3 is Correct: On Amavasya (New Moon), the Moon is positioned between the Earth and the Sun, and its illuminated side faces away from Earth. As a result, there is no moonlight to interfere with the visibility of stars and other celestial bodies. This makes it the best time to observe the night sky, provided the weather is clear. Key Takeaway: Poornima marks the Full Moon phase when the moon is fully visible, whereas Amavasya marks the New Moon phase when the moon is invisible, offering the darkest skies for observation.

With reference to the phases of the Moon,… - NCERT Class 6 Geography MCQ

NCERT Class 6 Geography — Chapter 1: The earth in the solar system

mcqmedium

With reference to the phases of the Moon, consider the following statements:

The Full Moon can be seen only once in about a month’s time.
The New Moon night is also known as Poornima.
On Amavasya, the night sky can be watched best if it is a clear night.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT The Earth Our Habitat · Page 1

Options

A1 and 2 only
B2 only
C1 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (c) 1 and 3 only

Explanation

The phases of the Moon are determined by the relative positions of the Sun, Earth, and Moon. A complete cycle of lunar phases, known as a synodic month, takes approximately 29.5 days.

Statement-wise Analysis:

Statement 1 is Correct: The Full Moon occurs when the Earth is located between the Sun and the Moon, allowing the entire sunlit side of the Moon to be visible from Earth. Since the lunar cycle is roughly one month long (29.5 days), the Full Moon is typically seen only once during this period.
Statement 2 is Incorrect: The terminology for lunar phases in the Indian context distinguishes between the Full Moon and the New Moon. The Full Moon night is known as Poornima. The New Moon night is known as Amavasya.
Statement 3 is Correct: On Amavasya (New Moon), the Moon is positioned between the Earth and the Sun, and its illuminated side faces away from Earth. As a result, there is no moonlight to interfere with the visibility of stars and other celestial bodies. This makes it the best time to observe the night sky, provided the weather is clear.

Key Takeaway: Poornima marks the Full Moon phase when the moon is fully visible, whereas Amavasya marks the New Moon phase when the moon is invisible, offering the darkest skies for observation.

Your note

More from Chapter 1: The earth in the solar system

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