1. Rock Cycle Review
Tuesday, November 3rd 2015
Textbook pages 217 – 219

2. Some Parts of the Earth’s Surface Build Up and Some Wear Down
Internal geologic processes
Generated by heat from the earth’s interior, generally build up the earth’s surface in the form of continental and oceanic crust including mountains and volcanoes
External geologic processes
Weathering : driven directly or indirectly by energy from the sun(mostly in the form of flowing water and wind)
Physical, Chemical, and Biological
Erosion: Wind, Flowing water, Human activities

3. Weathering: Biological, Chemical, and Physical Processes

4. Earth’s Rocks are Recycled……..
The three major types of rocks found in the earth’s crust — sedimentary, igneous, and metamorphic — are recycled very slowly by the process of erosion, melting, and metamorphism.

5. Earth’s crust is composed of minerals and rocks
Three broad classes of rocks, based on formation
Sedimentary Igneous
Sandstone Granite
Shale Lava rock
Dolomite Metamorphic
Slate Anthracite
Lignite Slate
Bituminous coal Marble
Leave space under each rock type for in-class and homework notes!

6. The Earth’s Rocks Are Recycled Very Slowly
Rock cycle: the interaction of physical and chemical processes that change rocks from one type to another. Slowest of the earth’s cyclic processes

7. The Life of a Rock Layers of sediment join together.
Melted rock cools and hardens
Changes are made from pressure and heat.

8. Rocks become smaller, and smaller, and smaller, and smaller. . .
By erosion
By wind
By earthquake
By floods
By rain
By slides
By man
Rocks change…………..
By earthquakes
By volcanoes
By heat and pressure

9. Weathering: the breaking up of rocks and soil into different products (clay, sand, rock fragments like pebbles & stones)
Erosion: the moving of weathered rock and soil. Weathering allows erosion to take place.

10. Sedimentary Rock is . . .
Rock formed when layers of small particles of shell, rock, and sand join together.
Types of Sedimentary Rocks Include…
Conglomerate
Sandstone
Gypsum
Shale
Limestone

11. Sedimentary Rocks How They are Made
Wind and water break down the earth
Bits of earth settle in lakes and rivers
Layers are formed and build up
Pressure and time turn the layers to rock

12. Metamorphic Rock is . . . Types of Metamorphic Rocks
Rock that is formed when pressure and heat create changes to sedimentary or igneous rock.
Types of Metamorphic Rocks

13. Metamorphic Rocks What are They?
Rocks that have changed
They were once igneous or sedimentary
Pressure and heat changed the rocks

14. Igneous Rock is . . .
Rock that is formed when melted rock cools and hardens.
Types of Igneous Rocks
Granite

15. Igneous Rocks What are They?
Fire Rocks
Formed underground by trapped, cooled magma
Formed above ground when volcanoes erupt and magma cools