This investigation will help you to:
Length of Planet Earth’s Day and Night, Don Ion
This Flash animation (best to use Internet Explorer as the browser) shows the seasonal variation in the circle of illumination viewing the north pole. An inset shows the earth’s revolution around the sun. This is an excellent way to explain for changes in daylength with season.
The Photosynthetic Process, Illinois at Urbana-Champaign
Read more from this concept paper on how important the sun is to life on Earth.
How the Sun Shines, Nobel Media
Learn more about the science behind how the sun shines and supports life on Earth.
Evolution of a Star about the Size of a Sun, Charles Burrows
Watch the evolution of a star similar to our sun with the H-R diagram as a backdrop with this animation.