Seasons research

We have been looking on the internet to find out why the seasons change. We found out that it is all to do with the tilt of the Earth on its axis as it orbits around the sun. At different times of the year different parts of the world get more light from the sun than others.
The diagram from this site shows this clearly.
http://www.historyforkids.org/scienceforkids/physics/weather/seasons.htm