The powdery residue left after burning
Matter flowing from a volcano that solidifies as it cools.
Fragments of lava or rock smaller than 2 mm in size that are blasted into the air by volcanic explosions.
An underground passage magma travels through.
An opening in Earth's surface through which volcanic materials escape.
A small cone-shaped volcano formed by an accumulation of volcanic debris.
earths crust
Magma collects inside a volcano's magma chamber before it erupts
Layer of a volcano made of ash and lava from previous erruptions
The vapour into which water is converted when heated, forming a white mist of minute water droplets in the air.

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