Description of the Earth

Shape and size Layers

Movements

Origin of Earthquakes

Origin of volcanic Eruption

• Earth rotation: • The earth rotates in its own axis. • It rotates once every 23 hours, 56 minutes

and 4.1 seconds.

The Earth Movements

Layers of the earth:•Crust •Mantle •Outer core •Inner core

•The layers of the Earth.

The Earth: →Third planet from the sun →The fifth largest planet in the solar system in terms of size.

The Earth is not perfect sphere: →The equator is 21 km wide .→The north pole dilates 10 meters →The south pole is sunk 31 meters.

The Earth’s Movements

Earth’s Orbit: the circumference of the orbit is approximately 938,900,00km. The earth travels along

the circumference at a speed of 106,000 km per hour .