However, the North Pole does not always tilt towards the Sun, but gradually moves right around during one year (i.e. one orbit), so for half of the time the North Pole is pointing away from the Sun and the South Pole is pointing towards it.
Try this animation to see what we mean.
You can see this in the picture below. When the North Pole is pointed towards the Sun, it is Summer in the Northern Hemisphere. When it is pointed away from the Sun, it is Winter.
It is the Axial Tilt of the Earth that causes the Seasons.
To carry out a short experiment to see why the tilt of the Earth makes it hotter in the Summer and colder in the Winter, click here.
Why not look at the following two demonstrations, which will help to reinforce your knowledge of the Seasons:
- Day and Night: See how the Sun moves across the sky at different times of the year.
- Seasons Demonstration: Use this to to see how high in the sky the Sun gets month-by-month during the year.