12 nov. 2017

UNIT 1 SOCIAL SCIENCE 2º EP Planet Earth


The Earth is a large sphere.
It is covered by water and land.
The air around the Earth is called the atmosphere.


The Earth turns around the axis once every 24 hours.
One day : Rotation.

The Earth orbits the Sun once every 365 days.
One year : Traslation.

When it is day in one half of the Earth, 
it is night in the other half.

The Moon orbits the Earth. It is a satellite.
The Moon shines because the Sun illuminates it.