1. Grab the note sheet from the front
Grab the note sheet from the front. Discuss what a rock is with your table.
Sedimentary-sandstone
Metamorphic- gneiss
Igneous- diorite

2. What is a Rock? Naturally Occurring (not man made) Solid
Mixture of minerals and other organic matter

3. How are rocks formed?
Forces deep inside Earth and at the surface produce a slow cycle that builds, destroys, and changes the rocks in the crust.
Plate movements also cause faulting, folding and other motions of the crust that help to form sedimentary and metamorphic rock.

4. Igneous
Rocks

5. Magma & Lava form different types of igneous rock
Igneous rock is classified by where rock forms
Intrusive vs. Extrusive
forms when magma forms when lava
slowly cools in the earth quickly cools on earth’s surface

6. Intrusive Vs. Extrusive
Diorite Granite Basalt Andesite
Ask the students to take a few minutes to compare intrusive to extrusive. You could have them brainstorm on whiteboards as a group or a piece of paper and then share their observations.
Pegmatite Gabbro Rhyolite Scoria 6

7. 4. Igneous Rocks: Crystal size & Cooling Time
Location of Rock
Intrusive (in earth)
Extrusive (earth surface)
Crystal Size
Large crystals
Small crystals
Picture
Cooling time
Longer cooling time
Shorter cooling time 7

8. Description of Igneous Rocks:
Contains bubble-like holes
Hard
Bubbly texture

9. Sedimentary Rock

10. Some rocks form from rock particles
Sediment = materials that settle out of water or air
Materials can be:
tiny pieces of rock
broken minerals
pieces of plants and animal remains

11. How do sedimentary rocks form?
Sediments pile on top of each other on land or in water
As sediments pile, they become compacted and cement together
Involves weathering and erosion

12. Sedimentation Process

13. Sedimentary rock layers

14. Rock layers

15. Some rocks form from plants or shells
Coal- created from plant remains (dead wood, bark, leaves, stems, and roots)
The coal we use today started forming millions of year ago in swamps
Limestone- created from
the shells and skeletons of
ocean organisms
Can you see the plant remains?

16. Limestone formation

17. Description of Sedimentary:
Has layered features
Very soft (easily scratched)
Contains fossils
Made of particles cemented (pressed) together

18. Sedimentary Examples:
Limestone – made from seashells
Shale – made from mud
Sandstone – made from sand

19. Metamorphic Rocks

20. Metamorphic Rocks Heat and pressure change rocks deep inside earth
The original rock is called the parent rock
The new rock formed is called the metamorphic rock
Heat and pressure change the structure of the parent rock and their minerals recrystallize

21. 9. Examples of Metamorphic Rocks
Parent Rock= Shale
Metamorphic Rock = Slate
Increase Temp. & Pressure

22. Examples of Metamorphic Rocks
Parent Rock = Limestone
Metamorphic Rock = Marble
Increase Temp. & Pressure

23. Examples of Metamorphic Rocks
Parent Rock = Mica
Metamorphic Rock = Phyllite
Increase Temp. & Pressure

24. Description of Metamorphic:
Fine texture
Has bands or streaks of minerals
Usually made of quartz and calcite

25. 10. When a rock forms does it stay that way forever?
NO!!!!!!
Rocks are always changing by processes like:
Weathering and Erosion -Melting
Heat and Pressure -Cooling
Compaction and Cementation
Rock Cycle – the set of natural processes that form, change, break down, and reform rocks.

26. Get out your rock cycle diagram from Tuesday
Get out your rock cycle diagram from Tuesday. Try to complete it using your vocabulary words and the word bank.

27. 3 Rock Types Review
Igneous Rock – forms when molten rock cools and becomes solid. This can happen within earth or on the surface Sedimentary Rock – forms when pieces of older rocks, plants, and other materials get pressed and cemented together Metamorphic Rocks – forms when heat and pressure causes older rocks to change into new types of rocks. These are formed deep under the earth.

29. 11. Rock Cycle Rocks can change from one category or rock into another
The rocks can move through the cycle in many ways, there is no particular order they must follow 29

30. Rock Cycle animation - link
Click the link in the title to go to an animation of the rock cycle.

31. Grab the lab sheet from the front and write your name on it
Grab the lab sheet from the front and write your name on it. Then answer the following questions with your table. Have out your rock cycle from yesterday as well.
What are the 3 types of rocks?
Why is the set of natural processes by which rocks change into other types of rocks called a cycle?
If a rock began as a metamorphic rock, what could happen to it?

33. https://www.youtube.com/watch?v=s8BUc4zEUyw Rock Odyssey

34. Rock Cycle Vocabulary
Erosion – the movement of rock pieces from one place to another by wind, water, or ice
Weathering – the breaking down of rocks by wind, water, ice, or plant roots
Heat – high temperatures
Pressure – caused by layering or weight
Melting – occurs due to magma
Deposition – when rocks are moved to a new location due to erosion