Answer the question

1
Geology
10
Answer the question
Why does a volcano erupt?
P. Reardon 2008 Based on Science Starters by
T. Trimpe at http//sciencespot.net/
2
Geology
10
The answers is

1. Two of earth crust plates collide with one plate
   going under the other plate.
2. The impact causes friction in the earths crust.
3. The pressure caused by the friction makes the
   rocks under the plates melt and help the magma
   rise.