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