It is on it you live, small presentation of our planet, Earth. 

     I am also called  the blue planet due to the abundant water on my surface.

All the the people we know of live on Earth.

A protective shield against the sun's rays or objects which could strike me surrounds me  : it is the atmosphere. 





     I turn around myself in one day or 24 hours.

That explains why we have day and night.

One of my side is facing the Sun (which is day), on the other is in the shadow (night). 




        The Earth's seasons are not caused by the differences in the distance from the sun.

The seasons are the result of the tilt of the Earth's axis.

In summer, the sun's rays come straight on our country : the weather is very hot.

In automn, the rays come increasingly tilted : the weather starts to be cold.  

In winter, the rays  are most tilted: the weather is very cold .

Lastly, in spring, the rays come increasingly straight : it starts getting hot.