When subduction occurs, the crustis weakened by the collision, and cracks can form.

Lava can break through the cracks and form a volcano!

Parts of a volcano:

Magma Chamber: As magma flows out of the mantle, it collects in a big underground pool

Magma: The hot, molten rock that comes out of the mantle.

Pipe: Narrow, vertical crack that brings magma to the surface.

Side Vent: Weak side cracks in the volcano can allow lava to come out the sides.

Vent: The main exit for magma to leave the pipe.

Lava: Magma that reaches the surface.

Crater: The bowl shaped mouth of the volcano.

A volcano is a lot like a person!

Stomach = magma chamber

Puke = magma/lava

Esophagus = pipe

Neck/Throat = vent

Mouth = crater

Types of Volcanic Eruptions:

Quiet Eruption = magma is runny and oozes or pours out of the vents, forming a swift lava flow!

Though quiet eruptions might seemfairly harmless, the lava flows fastand burns or melts whatever it touches!

Explosive Eruption = magma is thickand sticky, clogs the pipe and buildsup pressure until it explodes!

This can form a Pyroclastic Flow (ash, cinders, and boulders blow out!)

If you don’t get hit by falling chunksof rock, the ash could still choke or bury you!