Presented by Kesler Science
Essential Questions: What processes are involved in the formation and classification of metamorphic, sedimentary, and igneous rocks?
Sediments A model that describes the formation, breakdown, and reformation of a rock. Igneous Metamorphic Magma Sedimentary
Sedimentary Formed when sediments accumulate and compact and cement together. Often deposited in layers and contain sand, pebbles, and frequently fossils. Ex. sandstone, limestone
Physical properties of Sedimentary s Sand, pebble, and even boulder size particles Some may contain fossils
Quick Action How Are s Broken Down? Discuss and Be Prepared to Share: Try to come up with 5 ways which rocks can be broken down into smaller pieces (sediment)?
By what process are sedimentary rocks broken down? Weathering By weather (rain, ice, wind), chemical changes, and living things (plant). Creates lose material called sediments.
By what process are sediments moved? Erosion Wind Water Gravity Ice They are deposited in layers - Deposition
What are the processes that form sedimentary rock? Compaction Sediments are deeply buried, placing them under pressure because of the weight of overlying layers.
What are the processes that form sedimentary rock? Cementation New minerals stick the sediment together just like cement. This holds the grains together tightly.
Quick Action Sedimentary Processes Add to your INB template. Weathering and Erosion (A) Compaction and Cementation (B) B. Sediments A. A. A. Igneous Metamorphic Magma Sedimentary
Metamorphic Formed by heat and pressure while buried deep below Earth s surface. Have a layered or banded (ribbon like) appearance or may have crystals. Ex. Gneiss, Marble, Slate
Physical Properties of Metamorphic s Layers look like ribbons Crystals
What are the processes that form metamorphic rock? Heat (caused by magma) Temperatures high enough to change its structure but not to melt it. Heat can change sedimentary, igneous, or another older metamorphic rock.
What are the processes that form metamorphic rock? Pressure - Caused by intense collisions and friction of tectonic plates and pressure from overlying rock layers. Deep under the Earth s surface. Pressure can change sedimentary, igneous or another older metamorphic rock.
Quick Action Metamorphic Processes Add to your INB template. B. Sediments A. A. A. Heat and Pressure (C) Igneous C. Magma Sedimentary C. Metamorphic
Igneous Formed when lava or magma harden. Found near volcanoes or fissures Ex. Basalt, Obsidian, Granite
Physical Properties of Igneous rock Fast Cooling/Extrusive Glassy Holes where gas was trapped Slow Cooling/Intrusive Large crystals Many colors
What are the processes that form Igneous rock? Melting Caused by increase in temperature in rock deep below the surface of Earth Caused by friction between crustal plates Lava molten rock material on Earth s surface. Magma molten rock material under Earth s surface.
What are the processes that form igneous rock? Cooling and Hardening Melted rock turns solid. Slow cooling happens below Earth s surface as magma cools forming large crystals. Ex. granite Fast cooling happens on the Earth s surface as lava cools forming small crystals. Ex. obsidian, basalt, pumice
Quick Action Igneous Processes Add to your INB template. Sediments B. Sedimentary A. A. A. Melting (D) Cooling and Hardening (E) C. Igneous C. Metamorphic E. D. Magma
Check for Understanding Can you identify the processes involved in the formation and classification of igneous, sedimentary and metamorphic rocks?