Chapter 3:Earth’s structure and Materials

1. Chapter 3:Earth’s structure and Materials Chapter 3.5 and 3.6

2. 3.5:Sedimentary Rocks Google images

3. How do sedimentary rocks form? Sedimentary rocks form when sediment is deposited by water and wind Process: weathering, erosion, deposition, compaction and cementation

4. What are the three major types of sedimentary rocks? Clastic rocks Organic Rocks And Chemical rocks Geologist classify each rock according to the type of sediment that makes up the rock Sediment: small pieces that come from rocks or living things

5. Clastic Rocks A Clastic Rock is a sedimentary rock formed when rock fragments are squeezed together Clastic rocks are grouped by size

6. Coal Organic Rocks Organic rocks do not form from particles of other rocks. They form where the remains of plants and animals are deposited in layers. Limestone

7. Chemical Rocks Chemical rocks forms when minerals dissolved in a water solution crystallize. Chemical rocks can also form from mineral deposits that are left when seas or lakes evaporate People have used sedimentary rocks throughout history for many different purposes, including for tools and building materials

8. Chapter 3.6 The Rock Cycle What is the rock cycle? The rock cycle is a series of process that occur on earth’s surface and in the crust and mantle that slowly change rocks from one kind to another. The Rock Cycle Through melting, weathering and erosion, and heat and pressure, the rock cycle constantly changes rocks from one type into another type.

9. Surface Events Surface and Subsurface Events: the Tibetan Plateau Processes on and underneath Earth’s surface drive the rock cycle in mountains on the Tibetan Plateau. The Rock Cycle and Plate Tectonics New rock forms on the ocean floor of the Atlantic Ocean, forming a ridge. Here, two plates move apart.