Núi lửa

Metamorphic Rocks
What are They?

Rocks that have changed
Rocks that have changed

They were once igneous or sedimentary
They were once igneous or sedimentary

Pressure and heat changed the rocks
Pressure and heat changed the rocks
Types of Metamorphic Rocks
Schist Gneiss
Igneous Rocks
What are They?

Fire Rocks
Fire Rocks

Formed underground by trapped, cooled
Formed underground by trapped, cooled
magma
magma

Formed above ground when volcanoes
Formed above ground when volcanoes
erupt and magma cools
erupt and magma cools
Types of Igneous Rocks
Granite
Scoria
Pumice
Obsidian
Rocks Have Been Used For
Many Years
and
For Many Things

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