The diagram below shows the position of Earth at four different times during the year. Which two positions represent an equinox?

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position A and position B
position A and position C
position B and position D
position C and position D

1 answer

In the context of Earth's position relative to the Sun, an equinox occurs when the tilt of Earth's axis is such that the Sun is directly above the equator, resulting in approximately equal day and night lengths all over the planet. This happens twice a year: during the March equinox (around March 20-21) and the September equinox (around September 22-23).

Without the visual reference of the diagram, I can't determine which positions represent the equinoxes. However, if you identify positions that depict the Sun in a position relative to the Earth where both hemispheres receive equal sunlight, those will be the positions that represent the equinox.

Based on your options, please check which pairs of positions correspond to these descriptions, and that will allow you to find the correct answer.