1. By: Amy Trausch

2. Scientist have discovered two huge upwellings of hot rock on either side of the earth. One under Africa and one under the Pacific Ocean caused by mantle movements and volcanic activity.

3. The largest known quakes have been 8.8 to 8.9 on Richter scale.

4. The surface of the Earth is made up of 18 tectonic plates!

6. Magma is stored in the magma chamber and it is naturally bouyant compared to the surrounding rock so it is pushed up.

7. Magma viscosity and gas content are factors in the shape and explosiveness of the volcano

8. The plates are in constant state of movement, slowly colliding with or pulling away from each other.