EQ: How are rocks classified?

Vocabularyigneous rock These rocks are

formed when hot liquid cools and solidifies.

Vocabularyigneous rock These rocks are

formed when hot liquid cools and solidifies.

Classifying Igneous rocks = “Magma vs. Lava”Intrusive igneous rock – igneous rocks formed when magma cools slowly beneath the Earth’s surface.

Extrusive igneous rock – igneous rocks formed when lava cools quickly on top of the Earth’s surface.

Vocabularysedimentary rock These rocks are

formed when fragments from minerals and other rocks become cemented together.

Vocabularysedimentary rock These rocks are

formed when fragments from minerals and other rocks become cemented together.

Vocabularysedimentary rock These rocks are

formed when fragments from minerals and other rocks become cemented together.

Classifying Sedimentary rock – “Pieces of Me”

Clastic sedimentary rock – made from fragments of other rocks and minerals.

Chemical sedimentary rock – solutions of dissolved rocks and minerals.

Organic sedimentary rock – rock with fossils and plant or animal remains.

Vocabularymetamorphic rock These rocks are

formed when rock material is exposed to heat and/ or pressure.

Vocabularymetamorphic rock These rocks are

formed when rock material is exposed to heat and/ or pressure.

Vocabularymetamorphic rock These rocks are

formed when rock material is exposed to heat and/ or pressure.

Classifying Metamorphic Rock – “I’m a changed rock, honest!”

Contact metamorphism – when rock changes because it comes in contact with magma.

Regional metamorphism – rock changes at areas where there is high pressure.

Metamorphic Rock (continued)

Foliated metamorphic -rocks that have minerals aligned in what LOOKS LIKE layers.

Nonfoliated metamorphic rocks do not have a pattern in the crystals.