Rock Cycle

You will need your textbook and notebook paper

Igneous Rocks

You will have 5 minutes to read pages 98-101

When you are finished, look at the pictures and read the captions

Igneous rocks are formed from ____ or ____that cools and becomes solid.

LAVA MAGMA

1. ORIGIN: Where the igneous rock is formed.

a. Extrusive is formed from lava on top of Earth’s surface

b. Intrusive is formed from magma underneath Earth’s crust

What do the prefixes EX- and IN- mean?

The 3 Most Important Things about The 3 Most Important Things about Classifying Igneous RocksClassifying Igneous Rocks

2. TEXTURE: Size, shape, and pattern of a rock’s grains or crystals

a. Large crystals form from slow cooling

b. Small crystals form from quick cooling

c. Porphyritic means part of the magma cools slowly and part cools quickly creating both sizes of crystal

3. MINERAL COMPOSITION: Minerals that are in a rock

REMEMBER: Minerals are not made from rocks (they are pure) but rocks can be made from minerals

You will have 5 minutes to read pages 102-105

When you are finished, look at the pictures and read the captions

Sedimentary Rocks

________ is small, solid pieces of rock or living things.

Sedimentary Rocks

Betsiboka River, Madagascar

SEDIMENT

Running water or wind loosen and carry away fragments of rock

Sediment settles

Sediment is pressed together Dissolved minerals crystallize and glue sediment together

EROSION DEPOSITION

COMPACTION CEMENTATION

Create an illustration in each box representing the step of formation

3 Type of Sedimentary Rocks3 Type of Sedimentary Rocks

ClasticClastic: Broken pieces of other rocks are squeezed together

OrganicOrganic: Thick layers of plant and animal remains

ChemicalChemical: Minerals are dissolved in a crystallized solution

Rock Cycle Animation

Rock Cycle Animation

Metamorphic Rocks

You will have 5 minutes to read pages 106-111

When you are finished, look at the pictures and read the captions

____________________ and __________________ deep beneath Earth’s surface can change any rock into a metamorphic rock

HEAT PRESSURE

Geologists classify metamorphic rocks by the arrangement of the grainsgrains that make the rock:

1. Foliated metamorphic rocks will have grains that are arranged in parallel layers

2. Non-foliated metamorphic rocks will have grains that are randomly arranged