1. 8.E.5A.2 Use the rock cycle model to describe the relationship between the processes and forces that create igneous, sedimentary, and metamorphic rocks.

2. Rocks There are THREE large classifications of rocks: Igneous
Metamorphic
Sedimentary
Each type of rock is formed differently and can CHANGE from one type to another over time
The way rocks are formed determines how we classify them

3. Igneous Rocks Forms when molten rock (magma or lava) cools and hardens
If cooling is SLOW beneath the surface— igneous rock is INTRUSIVE
If cooling is RAPID above the surface— igneous rock is EXTRUSIVE

4. Basalt – Extrusive Igneous Rock

5. Obsidian – Extrusive Igneous Rock

6. Metamorphic rocks
Forms when rocks are changed into different kinds of rocks by great HEAT and/or PRESSURE
They are heated, squeezed, folded, or chemically changed by contact with hot fluids and/or tectonic forces
When heat and pressure reach the rock’s melting point, it melts into magma

7. Gneiss – Metamorphic Rock

8. Marble – Metamorphic Rock

9. Slate – Metamorphic Rock

10. Sedimentary Rocks
Forms from the COMPACTION and/or CEMENTATION of rock pieces, mineral grains, or shell fragments called sediments
Sediments are formed through the processes of weathering and erosion of rocks exposed at Earth’s surface
Sedimentary rocks can also form from the chemical depositing of materials that were once dissolved in water

11. Limestone – Sedimentary Rock

12. Shale – Sedimentary Rock

13. Rocks are used for building and construction based on their properties
Heat and pressure results in metamorphic changes in minerals that, in turn, result in a rock being reclassified as a metamorphic rock
As heat and pressure increase, one type of metamorphic rock will transform into another type
When slow cooling magma is ejected before it has completely cools, the resulting igneous rock will have a mixture of macroscopic and microscopic mineral crystals (porphyritic texture: both intrusive and extrusive features)

14. Rock cycle The rock cycle is an ongoing process
The rock cycle is an example of how Earth recycles itself
Please draw the diagram on the next slide!

16. Create a foldable…
Including the terms: IGNEOUS ROCKS, METAMORPHIC ROCKS, SEDIMENTARY ROCKS, & ROCK CYCLE
Include the DEFINITION & EXAMPLES
Include INTRUSIVE & EXTRUSIVE IGNEOUS ROCKS
Yesterday’s foldable: WEATHERING, EROSION, DEPOSITION, & GEOLOGIC CYCLE
Include the DEFINITION
Include MECHANICAL WEATHERING & CHEMICAL WEATHERING
Draw and/or explain what we did with the crayon for WEATHERING, EROSION, & DEPOSITION