THE EARTH ORBITS THE SUN

The Earth orbits the Sun.
One complete orbit takes 365 days.
This is called an Earth revolution or a year.
 Earth revolution causes the four seasons.
The Earth rotates on a tilted axis.
In winter, the Sun’s rays reach the Earth at an angle.
This gives less heat.
In summer, the rays reach the Earth more directly. This gives more heat.

Photo from learner.org

Photo from nmsu.edu

Photo from nmsu.edu