1. NASA video
The Rock Cycle

2. The three types of rocks
Igneous
sedimentary
Metamorphic
All types of rock are subject to processes that change one rock type into another.

3. Igneous Rocks Formed from cooled and solidified magma Intrustive
formed from the cooling of magma within the earth’s crust
Cools and hardens slowly
Coarse grained- forms large, well-developed crystals
Extrusive
melted rock that hardens on the earth’s surface
Lava cools rapidly
fine grained rocks

5. Composition of Igneous Rocks
Felsic- Rocks in the granite family
Light colored
High silica content
Low magnesium and iron content
Mafic- Rocks in the basalt family
dark colored
lower silica content
high mg and fe content
Andesitic - Medium Silica
Green, grey, or brown

6. Sedimentary Rocks
rock formed from the debris of both other rocks and living matter.
90% of the earth’s crust is made from igneous rock, but 75% of the world’s land surface is covered with thin layers of debris or sediments.
These sediments settle on the beds of oceans, lakes, and rivers, and recompacted over millions of years to form sedimentary rock.

7. How are Sedimentary Rocks Formed?
DIAGENESIS-
the process that turns loose sediments into rock 
COMPACTION-
the slow squeezing of sediment to form hard rock
CEMENTATION-
The binding together of compacted sediments by chemicals like calcite, silica, and iron

9. 3 types of Sedimentary Rock:
CLASTIC- form from rock fragments weathered and eroded by glaciers, wind, rivers, and waves.
ORGANIC- rock made from the remains of plants and animals
CHEMICAL- rock made from chemicals dissolved in water

10. BEDDING PLANE-
a boundary between one layer of sedimentary rock and another

11. Metamorphic Rocks
formed from other rocks as a result of intense heat, pressure, and chemical processes
most form deep beneath the surface of the earth
formed from existing igneous, sedimentary, or metamorphic rock

12. Types of metamorphic formation:
 Contact metamorphism:
when hot magma pushes through existing rock, changing the structure and composition of the rock. Only rocks near the magma are changed.
Regional metamorphism:
movement of one tectonic plate against another causes heat and pressure, affecting rocks over an area of many thousands of kilometers

13. Types of metamorphic rocks:
 Foliated:
show visible parallel bands of minerals ex: slate, schist
 Unfoliated:
no bands of crystals ex: quartzite, marble

14. animation
Interactive animation