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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.

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Do Now

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Presentation Transcript

  1. Do Now • What is a rock? • Why do you think rocks look different?

  2. Objective I will be able to describe how igneous, sedimentary and metamorphic rocks are formed.

  3. Rock Cycle Video

  4. Types of Rock

  5. Sedimentary Rock Formation • Sedimentary rocks are formed from loose pieces of sediment and sandwhich are pressed and cemented together; The layers get squashed together.

  6. Sedimentary Rock Vocabulary

  7. Sediments- broken rock materials; may also contain plant and animal matter.

  8. 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.

  9. Compaction- process where the upper layers put pressure on the lower layers causing small sediments to stick together

  10. Cementation- a solution of minerals and water seeps between large sediments and "glues" them together.

  11. Sedimentary Rock Characteristics • Flat or curved layers • Particle size may be the same or vary • Usually has pores between pieces

  12. Sandstone, Limestone, Shale, Conglomerate

  13. 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.

  14. 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.

  15. 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

  16. Gneiss, Marble, Quartzite, Slate

  17. Igneous Rock Formation • Igneous rocks form when magma or lavacools and hardens.

  18. Igneous Rock Vocabulary • Extrusive-Igneous rock that forms above the Earth's surface. • Intrusive- Igneous rock that forms below the Earth's surface.

  19. 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)

  20. Granite, Basalt, Obsidian

  21. Rock Cycle Journey • Worksheet • Comic Strip

  22. Objective I will be able to describe how igneous, sedimentary and metamorphic rocks are formed.

  23. Rock Cycle

  24. Do Now • Take out your Homework and place it on the front edge of the table. • What is the rock cycle?

  25. Objective I will be able to describe the rock cycle.

  26. 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

  27. Rock Cycle Graphic Organizer

  28. 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.

  29. Where do the rock cycle facts go? Wind + water (weathering) = breakdown rocks

  30. Broken Rocks + plant & animal matter = sediment

  31. Pre-existing rock + heat and pressure = melted rocks

  32. Small sediments + pressure of upper layers = compaction

  33. Lava Cools and Hardens = Extrusive Rock

  34. Broken rocks + deposited at new location= erosion

  35. Large sediments are glued together = cementation.

  36. Quick Cooling Magma = Fine-grained rocks

  37. Slow Cooling Magma = Coarse-grained rocks

  38. Magma Cools and Hardens = Intrusive Rock

  39. Exit Ticket • How are sedimentary rocks formed? • How are metamorphic rocks formed? • How are igneous rocks formed?

  40. Do Now • What are minerals? • Where do you think you could find minerals in nature?

  41. Rocks and Minerals

  42. Rocks and Minerals Graphic Organizer

  43. Minerals Video

  44. Characteristics of Minerals • Must be a solid • Must occur in nature • Chemical composition • Crystalline structure • Must be inorganic

  45. Characteristics of Rocks • Mixtures of different types of minerals • May contain organic materials • Many rocks are not solid (magma) • Naturally occurring

  46. Rock/Mineral Data Table

  47. 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?

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