VOLCANIC ERUPTION

1. LESSON 3: HOW
DO VOLCANOES
ERUPT?

4. presentation title
20XX

5. FACTORS TO
CONSIDER IN
PREVENTING THE
RELEASE OF MAGMA

6. presentation title
20XX
Lithostatic Pressure – the heaviness of the layers of rocks
and soil that pushes the magma downward.
Rock Strength - the capacity of the rock to resist the
motion of the magma
Magma-static Pressure – force from the magma and gases
that pulls it to move upward

8. FACTORS TO
CONSIDER ON THE
RELEASE OF
MAGMA

9. thank you
mirjam nilsson
mirjam@contoso.com
www.contoso.com

10. FISSURES
- a crack in the earth's
surface associated
with the movement of
the tectonic plates.

11. Hydrothermal Alteration – dissolution of the rocks which
causes the lithostatic pressure to weaken.