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Famous Rock

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Famous Rock Another Famous Rock CHAPTER 4 ROCKS 4.1 Rocks Rock- Mix of minerals, organic matter, & glass Rock Cycle- Ways rocks form 1. – PowerPoint PPT presentation

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Title: Famous Rock


1
Famous Rock
2
Another Famous Rock
3
CHAPTER 4ROCKS
  • 4.1 Rocks
  • Rock- Mix of minerals, organic
  • matter, glass
  • Rock Cycle- Ways rocks form
  • 1. Heating/Cooling
  • 2. Weathering/Erosion
  • 3. Heat/Pressure

4
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  • - Rocks are classified by
  • 1. How they are formed
  • 2. Composition
  • 3. Texture
  • 4.2 Igneous Rocks (fire rock)
  • - Formed from cooling magma or lava
  • -Magma cools below ground
  • - Lava cools above ground

6
  • Classifying Igneous rocks
  • 1. Intrusive-
  • Cool below Earths surface (magma)
  • Cool slow, large grains Ex) Granite
  • Intrusive, Inside, Interior
  • 2. Extrusive-
  • Cool above Earth surface (lava)
  • Cool fast, fine grain Ex) Pumice
  • Extrusive-Exit-Exterior
  • 3. Volcanic Glass (extrusive)
  • Rapid cooling, little/no grains form
  • Ex) Obsidian

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8
  • 4.3 Metamorphic Rock
  • - Formed by heat pressure
  • Classifying Metamorphic Rock
  • 1. Foliated- Mineral grains form
  • parallel layers (Ex. Slate)
  • 2. Nonfoliated- No layers formed
  • Ex) Marble

9
  • 4.4 Sedimentary Rocks
  • Formed from sediments
  • 2 Ways Sediments Form
  • 1. Weathering- Caused by wind
  • water
  • 2. Erosion- Movement of weathered
  • material
  • Examples
  • 1. Rock salt 2. Sandstone

10
  • Classification of Sedimentary Rock
  • 1. Detrital
  • - Broken fragments
  • - Form by compaction or cementation
  • 2. Chemical
  • - Precipitate out of solution
  • Ex) Limestone, Rock salt
  • 3. Organic
  • - Once living things Ex) Coal
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