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3. During the Autumnal Equinox what occurrence takes place that happens only twice a year?
The Sun's rays are perpendicular to the Tropic of Cancer causing 12 hours of daylight on both
Northern and Southern Hemispheres.
The Sun's rays are perpendicular to the Tropic of Capricorn causing 12 hours of daylight on both
Northern and Southern Hemispheres.
The Sun's rays are perpendicular to the Prime Meridian causing 12 hours of daylight on both
Northern and Southern Hemispheres.
The Sun's rays are perpendicular to the equator causing 12 hours of daylight on both Northern
and Southern Hemispheres

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sqdancefan

Answer:

  The Sun's rays are perpendicular to the equator causing 12 hours of daylight on both Northern and Southern Hemispheres

Explanation:

At the vernal and autumnal equinoxes (twice a year), the axis of rotation of the Earth is perpendicular to the line between Earth and Sun. This means the Earth-Sun line is in the plane of the equator and intersects the equator. The sun's rays are perpendicular to the equator at that point, and everywhere on Earth experiences 12 hours of daylight.

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