130 likes | 282 Views
By Student A, and Student B. Rock the World. What are igneous rocks?. Igneous rocks are formed when hot magma forms and cools. Granite. Pumice. http://csmres.jmu.edu/geollab/Fichter/IgnRx/Ighome.html. What are Sedimentary Rocks.
E N D
By Student A, and Student B Rock the World
What are igneous rocks? • Igneous rocks are formed when hot magma forms and cools. Granite Pumice http://csmres.jmu.edu/geollab/Fichter/IgnRx/Ighome.html
What are Sedimentary Rocks • Sedimentary rocks are formed when sediments are pressed and cemented together are when minerals form from solutions. Sandstone Shale http://csmres.jmu.edu/geollab/Fichter/SedRx/Sedalphab.html
What are Metamorphic Rocks • Metamorphic rocks are formed when there is a change in temperature and pressure are the presence of watery fluids. Quartz Garnet http://csmres.jmu.edu/geollab/Fichter/MetaRx/index.html
How are Rocks formed? • We formed a sedimentary rock when we pressed our crayon sediments together. • We formed a metaphoric rock when we heated our sedimentary rock formed by the crayon sediments. • We formed an igneous rock when we melted our metaphoric rock formed by the crayon sediments. http://www.exo.net/~emuller/activities/Crayon-Rock-Cycle.pdf
The Rock cycle http://www.okaloosa.k12.fl.us/technology/WOWLessons/WOWResources/RockCycleDiagram.gif
Summary • We learned that any rock can change if the right conditions are present. A metamorphic or igneous rock can be changed to a sedimentary rock by weathering or erosion. A sedimentary rock can be changed to an igneous rock by magma.
Why are rocks and minerals important? • Rocks and minerals are used in a variety of materials and products. Examples: • Large buildings and monuments are built with granite and marble. • Tile in homes are made by slate or shale. • Salt is extracted from halite. • Coal is used as a form of energy and heat.
Why is knowing the mineral compositions of rocks important? • Some rocks may be easier to mine certain minerals. The higher the mineral percentage the easier it will be to mine.
Would all mineral compositions be the same for all? • NO, each area has different mineral contents. Coal can be found in Kentucky, gold can be found in California. Texas is know for Topaz, and petrified wood.
How do people use this information • Builders may use this information to keep cost down. Builders would want to know what minerals or rocks are found in areas that they can use to build with. Finding local materials would keep cost down.
Changes happen all the time. Our earth is constantly changing all the time. Rocks change from igneous, sedimentary, and metamorphic. Any rock can be changed to any type if the conditions are right. Industry refines and mines rocks and minerals to make many products that we use daily. They make products such as building supplies, heating elements to even table salt. What does it take to change the world? Queen. “We will Rock You.” News of the World. Trident Studios, 1977.