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

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.

Rocks and the Rock Cycle http://www.youtube.com/watch?v=ihfKNRdlE2E 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

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

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

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

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

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

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

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

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

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

Types of Sedimentary Rocks Sandstone Limestone Gypsum Conglomerate Shale

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

Types of Metamorphic Rocks Schist Gneiss

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

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

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.

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

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

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.

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?

Rock cycle review http://www.purposegames.com/game/rock-cycle-quiz http://www.neok12.com/diagram/Types-of-Rocks-01.htm

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

How do we illustrate the rock cycle? http://www.brainpop.com/science/earthsystem/rockcycle/ http://www.youtube.com/watch?v=SRaInMDNyE8 http://www.msnucleus.org/membership/storybooks/ricky.html

http://www.learner.org/interactives/rockcycle/diagram.html

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)

Practice quiz http://wps.prenhall.com/esm_tarbuck_earth_8/0,9073,1298259-,00.html