Volcano
Once magma reaches the surface it is called?
Lava
Where do hot spots occur?
Far from plate boundaries.
Mt. St. Helen is an example of what type of volcano?
Composit
What is the process that causes hot materials within earth to move towards the surface?
Convection
Stratovolcano is another term for what type of volcano?
Composite
What plate boundaries are volcanos not commonly found?
Transform Boundaries
What is radioactivity?
Unstable atomic elements decay over time releasing particles and energy