Question : An equinox is when:
Option 1: day and night are of equal length
Option 2: day is the shortest duration in the year
Option 3: day is the longest duration in the year
Option 4: day when maximum rainfall of the year occurs
Correct Answer: day and night are of equal length
Solution : The correct answer is day and night are of equal length .
When the sun is directly above the equator, neither of the poles is facing towards the sun. As a result, the entire earth has equal days and nights. This phenomenon is known as the equinox. The vernal equinox, also known as the spring equinox, occurs in the Northern Hemisphere on March 20th or 21st, whereas it occurs in the Southern Hemisphere on September 22nd or 23rd.
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