Magma Chamber: The area within the upper mantle and crust of the Earth where magma collects before erupting onto the surface as lava.
Tectonic Plates: Large pieces of Earth's lithosphere that fit together like puzzle pieces to make up Earth’s surface. Their movement can cause earthquakes and volcanic eruptions.
Pyroclastic Flow: A fast-moving current of hot gas and volcanic matter (collectively known as tephra) that moves away from a volcano reaching speeds of up to 700 km/h.