1. Classifying Rocks Igneous Metamorphic Sedimentary
Rock Cycle
Classifying Rocks
Igneous
Metamorphic
Sedimentary

2. Sedimentary Rock
Sediment is weathered, eroded, deposited, compacted, and cemented to make sedimentary rock.
Examples:
Sandstone
Conglomerate
Limestone
shale

3. Igneous Rock Rock material is melted an cooled.
Magma underground is made of melted rock.
If the magma cools slowly underground, its crystals will be large. Example: granite
If the magma erupts from a volcano, the molten rock is called lava. Lava cools quickly, so crystals will be very small. Examples: pumice, scoria, obsidian

4. Metamorphic Rock
This type of rock was once another type of rock that was changed due to extreme heat and pressure, but not melting.
Magma underground that is near the rock heats it up, but does not melt it.
The rock recrystallizes. Examples:
Limestone becomes marble
Granite becomes gneiss
Shale becomes slate
Sandstone becomes quartzite.

5. Rock Cycle