ROCK CYCLE Classifying rocks

In Class  Obj. I will be able to classify rocks as metamorphic, igneous, or sedimentary by the processes of their formation  Vocabulary  Cementation  Compaction  Deposition  Erostion  Foliated  Igneous rock  Lava  Lithification Magma Metamorphic rock Non-foliated recrystallization Sedimentary rock Sedimentation weathering

@Home  Study vocabulary  Visit stemscopes online  Laporteisd.stemscopes.com Auguste science

Vocabulary notes  cementation - A process whereby compacted sediments bind and stick together and turn into rock

 compaction - A process whereby sediments pack, crush, and settle under the action of gravity and pressure from overlying layers

 deposition – the dropping off of eroded materials in a new location

 erosion – the process of moving sediments by wind, water, ice and gravity

 foliated – rocks that are composed of thin easily separable layers or bands

 igneous rock - Rock formed when heated magma or lava cools and hardens

 lava - A result of molten rock material pushed to Earth’s surface by volcanic action

 lithification - The compaction and cementation of sediment into rock.

 magma - Melted rock material beneath Earth’s surface

 metamorphic rock - Rock deep within Earth’s crust that has been exposed to extreme heat and pressure causing changes to its appearance, structure, and composition

 non-foliated – rocks that do not have a layered or banded structure.

 recrystallization - A reaction in which the atoms of existing crystals within a rock are reorganized due to heat and/or pressure.

 sedimentary rock - Rock formed when sediments deposited in layers, compact and cement together under pressure, over long periods of time

 sedimentation - The act or process of depositing sediment.

 weathering – the process of breaking rocks down into sediments

-  Extrusive rocks- Formed when molten rock reaches the Earth’s surface and cools.

 Intrusive rock- Formed when magma cools underground forming rock

Rock cycle