Crater

Magma V lava

Pyroclastic flow

Lahar

Tsunami

Super volcano

Caldera

Fissures

Geothermal

Geyser

Hot spot

Magma chamber

Vent

Secondary vents

Short term response

Long term response

Core

Mantle

Crust

Oceanic crust

Continental Crust

Earthquake

Earth tremor

After shock

Fault line

Focus

Epicentre

Richter scale

Seismometer

Seismograph

Magnitude

The 3 P's policy