Because Earth's axis of rotation is inclined 23.4 degrees from vertical, the Sun moves into the northern sky in the spring and into the southern sky in the fall.

Question

Quizplus · Accepted Answer

The tilt of Earth's axis at 23.4 degrees is responsible for the seasonal changes. As the Earth orbits the Sun, this tilt causes the Sun to appear to move northward into the sky during the spring and summer months for the Northern Hemisphere, and southward during the fall and winter months, leading to the observed changes in the position of the Sun in the sky throughout the year.

Because Earth's Axis of Rotation Is Inclined 23