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Effects of the Tilt of Earth's Rotation Axis

Develop a qualitative understanding for the effects of the tilt of Earth's rotation axis on the length of days and solar radiation received throughout the year.

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Part I
Notice that in each of the pictures, different parts of the poles are illuminated. In the first image, the north pole is present. Then the north pole begins to retreat into darkness and the south pole emerges at the bottom of the image. In December only the Antarctic is seen, and the north pole is now in darkness.

At equinoxes (September and March) everywhere on the Earth has a 12-hour day and, consequently, a 12-hour night except the north pole and the south pole where the sun is exactly at the horizontal. So the equator at these times will be in the center of the image. You need to choose a location along the equation. You could choose a city in equatorial Guinea, such as Aconibe. Its latitude is 1°18' N.

In June, the Sun is more directly above a location north of the equator. From the image, you can see that central America and north Africa ...

Solution Summary

Develop a qualitative understanding for the effects of the tilt of Earth's rotation axis on the length of days and solar radiation received throughout the year.

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