1. 1. Name the 3 kinds of rocks
What are rocks?
How are rocks classified?
Which kind of rock would you most likely find near a volcano. Describe its formation.
What is the difference between weathering and erosion

2. Bellwork Determine if the following are True or False
Igneous rocks are only found within the earth.
Molten rock found on the surface of the earth is called coral.
Molten rock is only found close to the surface.
Compaction and cementation of sediments are key processes involved in the formation of sedimentary rocks.
The process of rain wearing down rocks is an example of weathering.
Moving water is a minor force in transporting sediment
Sand once existed as rock.
The rock cycle only flows in one direction.
Magma is the result of rocks being heated into liquid rock.
Erosion is responsible for transporting sediment.

3. Rocks and the Rock Cycle
Rocks and the Rock Cycle
EQ: what is the rock cycle?
SC.7.E.6.2
Describe the series of processes and classes of rocks that make up the rock cycle. o

4. What is Rock?
A naturally occurring solid mixture made up of minerals and organic matter.
Rocks are always changing, the study of rocks can help scientists learn how earth has changed over time

5. What processes change rock?
Natural processes can change rock from one form to another and shape features of our planet.
Weathering
breaking rock into fragments called sediment.
Caused by wind, water, ice, and changes in temp
Erosion
Movement of sediment from one place to another
Caused by gravity, ice , water, wind
Deposition
Sediments are deposited (dropped) in bodies of water or low lying areas
Cementation
Weight from above presses sediments together and the minerals dissolve

6. What are the types of rocks
Rocks are classified based on how they form

7. igneous Forms from cooling lava and magma that becomes solid
Magma = molten rock underground
Lava = magma that has reached the surface
Intrusive: formed slowly IN the ground, form larger mineral crystals
Extrusive: formed above ground, smaller crystals

8. Lava = molten rock flowing on the earth’s surface
Magma = molten rock below the earth’s surface

9. In what ways are the two rocks similar?
Granite
Rhyolite
In what ways are the two rocks similar?
Both are from melted rock
Their composition is the same

10. 16. What causes the two rocks to be different?
Granite
Rhyolite
Granite – Slow cooling below the earth’s surface
Rhyolite – Quick cooling on the earth’s surface

11. 15. In what ways are the two rocks different?
Granite
Rhyolite
Granite – coarse texture, made from magma
Rhyolite – fine texture, made from lava

12. Sedimentary
Formed when sediment from other rocks are pressed and cemented together
Where fossils form.
Can be made from organic material or pieces of other rock

14. Types of Sedimentary Rocks
Sandstone
Limestone
Gypsum
Conglomerate
Shale

15. Metamorphic
Formed when heat and pressure change the mineral content of the rock.
EX: a rock can be buried deep in crust, where temp and pressure are high. Over millions of years they change chemically

16. Types of Metamorphic Rocks
Schist
Gneiss

17. What is the rock cycle
The process in which rock changes from one type to another.
melting and cooling it forms igneous rock
Pressing and cementing together = sedimentary
transformed under heat and pressure = metamorphic rock

18. 1. Why is it important to have a basic understanding of the rock cycle?
Rocks contain clues about the environment. Helps us understand the formation of the earth.
Forces inside the earth and at the surface build, destroy, and change the rocks in the crust

20. How do tectonic plate motions affect the rock cycle?
Tectonic plates – blocks of the lithosphere that are made of crust and upper mantle Plates move on the mantle and move rock around.

21. uplift Rising of regions of the crust to higher elevations
Increases the rate of erosion of rock

22. subsidence Sinking of regions of crust to lower elevations
Leads to basins where sediments can be deposited

23. Rift zones A set of deep cracks between 2 plates that pull apart.
May cause areas where magma may form and cool to igneous rocks.

24. Bellwork Why do scientists study rock? What are the 3 types of rock
How are igneous rocks formed
How are metamorphic rocks formed
What 4 processes go into the formation of sedimentary rock?
How does uplift help form rocks?
How does subsidence help form rocks?
How do rift zones help form rocks?

25. Rock cycle review http://www.purposegames.com/game/rock-cycle-quiz

26. Which type of rock is formed by magma or lava?
Notes Quiz: Put all answers on the index card provided. You may use your own notebooks, but not your neighbor’s.
Which type of rock is formed by magma or lava?
List 4 processes that help to form sedimentary rock.
What does the study of rocks help scientists learn?
Which kind of plate movement might increase the rate of erosion in rocks?
What kind of rocks might form at a rift zone?
Label the parts of the rock cycle below: A B C

27. How do we illustrate the rock cycle?

29. bellwork
Describe the type of rock you might find at each locations A – D and describe why.
What is the difference between erosion and weathering?
List the steps in formation of sedimentary rock
You find a rock near a volcano with large crystals.
A. What kind of rock is it?
B. Describe its formation (where and from what)

30. Practice quiz