 |
Explorations an Introduction to Astronomy Thomas T. Arny | ||||||||
|
|
Instructor
Resources |
||||||||
|
|||||||||
|
|||||||||||||||||||||||||
Chapter
Images
Chapter 4, Figure 23
Figure
4.23
Because the
Earth's rotation axis keeps the same tilt as we orbit the Sun, sunlight falls
more directly on the Northern Hemisphere during part of the year and on the
Southern Hemisphere during the other part of the year. (B) A surface directly
facing the Sun receives more light (and thus heat) than a tilted surface.
