Do Now What is a rock? Why do you think rocks look different?
Objective I will be able to describe how igneous, sedimentary and metamorphic rocks are formed.
Rock Cycle Video
Types of Rock
Sedimentary Rock Formation Sedimentary rocks are formed from loose pieces of sediment and sand which are pressed and cemented together; The layers get squashed together.
Sedimentary Rock Vocabulary
Sediments- broken rock materials; may also contain plant and animal matter.
Weathering- the breakdown of rock by wind and water Weathering- the breakdown of rock by wind and water. Erosion-is the transporting of the broken rock material, or sediments, to a new location, where it is deposited.
Compaction- process where the upper layers put pressure on the lower layers causing small sediments to stick together
Cementation- a solution of minerals and water seeps between large sediments and "glues" them together.
Sedimentary Rock Characteristics Flat or curved layers Particle size may be the same or vary Usually has pores between pieces
Sandstone, Limestone, Shale, Conglomerate
Metamorphic Rock Formation Metamorphic rock is formed from preexisting rocks when heat, pressure and stress cause cause the rock to melt and turn into magma.
Metamorphic Rock Vocabulary Metamorphosis- "change" or "transformation". Magma is melted rock trapped beneath the Earth's surface. Lava is magma that has reached the Earth's surface.
Metamorphic Rock Characteristics Can be formed from igneous rocks, sedimentary rocks, or other metamorphic rocks. May have alternate bands of light and dark minerals Rarely has pores or openings
Gneiss, Marble, Quartzite, Slate
Igneous Rock Formation Igneous rocks form when magma or lava cools and hardens.
Igneous Rock Vocabulary Extrusive- Igneous rock that forms above the Earth's surface. Intrusive- Igneous rock that forms below the Earth's surface.
Igneous Rock Characteristics Normally contains no fossils Usually made of two or more minerals May be light or dark colored May be fine-grained or glassy (extrusive)
Granite, Basalt, Obsidian
Rock Cycle Journey Worksheet Comic Strip
Objective I will be able to describe how igneous, sedimentary and metamorphic rocks are formed.
Rock Cycle
Do Now Take out your Homework and place it on the front edge of the table. What is the rock cycle?
Objective I will be able to describe the rock cycle.
Igneous Rock Crystallization When it cools slowly it forms coarse-grained rocks. When it cools fast if forms fine-grained rocks. http://www.classzone.com/books/earth_science/terc/content/investigations/es0603/es0603page05.cfm
Rock Cycle Graphic Organizer
Turn it over and write the following on the back The Rock Cycle is a process that builds, destroys and changes the rocks in the crust.
Where do the rock cycle facts go? Wind + water (weathering) = breakdown rocks
Broken Rocks + plant & animal matter = sediment
Pre-existing rock + heat and pressure = melted rocks
Small sediments + pressure of upper layers = compaction
Lava Cools and Hardens = Extrusive Rock
Broken rocks + deposited at new location= erosion
Large sediments are glued together = cementation.
Quick Cooling Magma = Fine-grained rocks
Slow Cooling Magma = Coarse-grained rocks
Magma Cools and Hardens = Intrusive Rock
Exit Ticket How are sedimentary rocks formed? How are metamorphic rocks formed? How are igneous rocks formed?
Do Now What are minerals? Where do you think you could find minerals in nature?
Rocks and Minerals
Rocks and Minerals Graphic Organizer
Minerals Video
Characteristics of Minerals Must be a solid Must occur in nature Chemical composition Crystalline structure Must be inorganic
Characteristics of Rocks Mixtures of different types of minerals May contain organic materials Many rocks are not solid (magma) Naturally occurring
Rock/Mineral Data Table Sample Color Texture (Fine or Coarse) Shiny or Dull Smooth or Rough Looks like glass or metal Size (in. or cm.) Rock Group (igneous, metamorphic, sedimentary) Mineral?
Analyze and Conclude Use your samples and table to answer the following questions. Which of the samples could be a mineral? What physical properties do they share with the other samples? How are they different? What properties were most useful in classifying the samples? Why?
Exit Ticket How are rocks and minerals different?