Rocks Rock!!!
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Transcript of Rocks Rock!!!
1. Sugarloaf Mountain, Brazil
http://en.wikipedia.org/wiki/Sugarloaf_Mountain_(Brazil)
2. Stone Mountain, Georgia
http://en.wikipedia.org/wiki/Stone_Mountain
4. Plymouth Rock, Massachusetts
http://en.wikipedia.org/wiki/Plymouth_Rock
5. Mount Rushmore, South Dakota
http://en.wikipedia.org/wiki/Mt._Rushmore
6. Stone of Destiny, England
http://www.westminster-abbey.org/our-history/royals/coronations/coronation-chair
7. Blarney Stone, Ireland
http://en.wikipedia.org/wiki/Blarney_Stone
8. Rosetta Stone
http://en.wikipedia.org/wiki/Rosetta_Stone
9. Rock of Gibraltar, Spain
http://en.wikipedia.org/wiki/Rock_of_Gibraltar
11. The Black Stone in the Kaaba, Mecca
http://en.wikipedia.org/wiki/Kaaba
Rocks
• Rock: A mixture of minerals, rock fragments, volcanic glass, organic matter or other natural materials.
Igneous rocks
• Igneous rocks: rocks formed when magma or lava cools and hardens.
Igneous is from Latin, meaning “born of fire”.
http://www.absorblearning.com/media/attachment.action?quick=12z&att=2795
Igneous rocks
• Intrusive: forms below the surface when magma cools slowly.
• It has large crystals (granite).
http://www.1000granitecolors.com/
Igneous rocks
• Extrusive: formed when lava cools quickly on the surface of the Earth.
• Crystals are small (obsidian and basalt)
Igneous-examples and uses
• Granite: buildings, bridges, and counters
• Basalt : gravel
• Obsidian: knives
Famous Igneous RocksGiants Causeway Stonehenge
Easter Island
Sugarloaf
Mtn.
The black stone Mt. Rushmore
Machu Picchu Mt. Fuji
Sedimentary rocks• Sediments: loose materials, such as rock
fragments, mineral grains, and the remains of once living organisms
• Sediments are moved by wind, water, ice, or gravity.
Sedimentary rocks• Sedimentary: rock formed when sediments
are compacted and cemented together. Rock may feel grainy or sandy and weak.
Famous Sedimentary Rocks
SphinxHaolong Bay
Angkor Wat
Chichen Itza
Uluru (Ayers Rock)
Monument Valley
Metamorphic rocks
• Metamorphic: rock that forms when heat, pressure, or chemicals act on a rock to change its form or composition. Layers are often seen in these rocks.
Limestone into marble
Granite into Gneiss
http://www.classzone.com/books/earth_science/terc/content/visualizations/es0607/es0607page01.cfm?chapter_no=visualization
Metamorphic-example and uses• Marble: buildings and sculptures
• Slate: flooring, roofing, walkways, and chalkboards
Review• What is the difference between a mineral
and a rock?– Minerals have specific chemical compositions,
rocks are a random assortment of materials– Rocks can have organic materials (shells and
plants) mixed in– Rocks may not have a crystal structure
VS.
Rock Cycle
• Rock cycle: a model that describes how rocks slowly change from one rock type to another rock type over time.
Rock Cycle• Changes to rocks
occur due to melting, cooling, weathering and erosion, compaction and cementation, and heat and pressure.
Rock Cycle Quiz
• How does one rock change into another? Use your rock cycle chart to figure it out!
5. Igneous Rock to Sedimentary Rock?
• Weather and erode into sediments
• Sediments compact and cement into sedimentary rock.
6. Metamorphic Rock into Sedimentary Rock?
• Weather and erode into sediments
• Sediments compact and cement into sedimentary rock.
7. Sedimentary Rock to Igneous Rock?
• Sedimentary rock undergoes heat and pressure to become Metamorphic rock, then it melts to become magma, then cools to become Igneous rock.
OR• Sedimentary rock melts
into magma then cools into Igneous rock