The equinox occurs twice a year (not four times), when the Earth's axis is neither tilted towards nor away from the Sun, resulting in approximately 12 hours of daylight and 12 hours of night for all locations (not the longest day of the year). The subsolar point is at the equator during the equinoxes, not at one of the tropics, so choice D is also incorrect.

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The Equinox

Question 77

Multiple Choice

The equinox

A) occurs four times during the year.
B) has 12 hours of day and 12 hours of night for all locations.
C) is the longest day of the year at any given place.
D) is when the subsolar point is at one of the tropics.

Correct Answer: