[2015] Sofia Bove: Rocks and Minerals Sofia Bove

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[2015] Sofia Bove: Rocks and Minerals Sofia Bove

Rocks and Minerals

A mineral is a naturally occurring, inorganic, solid with a definite chemical composition and an ordered internal structure. 3 testable properties are a streak test, their hardness, and are they magnetic. The exact shape of the mineral depends on how and where the crystal is formed.

The Rock Cycle:Igneous rock turns into metamorphic rock by heat and pressure. Then it melts into magma and lava, cools, and then goes back to igneous rock. Igneous rock can also turn into sedimentary rock because of sediments and weatering and erosion.

Igneous rock:When magma loses heat, it cools and crystallizes into an igneous rock. The difference between intrusive and extrsusive rock is intrusive rock cools slowly below the Earth's surface and extrusive cools quickly on Earth's surface. An example of intrusive rock is granite and an example of extrusive rock is basalt. Granite underlies much of the continental crust. Basalt is found on the seafloor. The characteristics of basalt are dark colored and fine grained and the characteristics of granite are colors ranging to pink to light or dark grey and it consist mostly of quartz.

Metamorphic rock:When rocks are buried deep in the Earth at high temperatures and pressures, they form new minerals and textures all without melting. If melting occurs, magma is formed restarting the rock cycle. Regional metamorphism is where rocks and minerals are changed over a wide area or region but contact metamophism is where rocks and minerals are changed by heat. Foliated has layers or bands you can see and non-foliated do not appear layered. An example of foliated is slate and an example of non-foliated is marble. Slate is found where the continental crust is compacted and folded by the collision of two continental plates. Marble is found Alabama, Colorado, Texas, ext. The characteristics of slate are its texture is foliated, its grain size is fine-grained, its hardness is hard and brittle, and its color is black, shades of blue, green, red, and brown. The characteristics of marble are its hardness is 3 on Mohs hardness scale and its color is light.

Sedimentary rock: Sedimentary rock is formed from particles of sand, shells, pebbles, and other materials is gradually compacted into layers. A clastic rock forms by weathering process which breaks down rocks into pebbles, sand, or clay praticles by exposure to wind, ice, and water. Clastic rocks are named according to grain size of sediment particles. Chemical rocks form from chemical reactions, usually in the ocean. These are named accordingly also. An example is sandstone. Sandstone is found in England, Italy, Egypt, and India. The characteristics of sandstone are its hardness is 6.5 to 7, its density is 2.3 to 2.4, and its color is minor color total variations.

Silver:Nevada, Mexico, Peru, Chile, and Canada produce a significant amount of silver. Miners are measuring how much silver deposits into water sources. Once the chemicals from silver reach a stream a chemical reaction happens and the water becomes toxic.

MLA:Websites1. http://www.sciencekids.co.nz/sciencefacts/earth/rocksandminerals.html Smith, Rene.“Minerals”. sciencekids.co.nz. N.p.. n.d.. Web. 6 Feb. 2015.2. http://www.mineralogy4kids.org Harder, Vicki. “Sedimentary Rocks” mineralogy4kids.org. Mineralogical Society of America. 2015. Web. 2 Mar. 20153. http://geology.com/rocks/ King, Hobart. “What are Minerals?”. geology.com. Geology.com. 2015. Web. 10 Feb. 20154. https://www.mineralseducationcoalition.org/minerals/granite "Granite". mineralseducationcoalition.org. Minerals Education Coalition. 2013. Web. 13 Mar. 2015. 5. http://www.cotf.edu/ete/modules/msese/earthsysflr/rock.html "Cycles". cotf.edu. Wheeling Jesuit University/NASA. 28, April, 2005. Web. 26 Feb. 2015. Books1. True or False Rocks & Minerals Berger, Melvin, and Gilda Berger. Rocks & Minerals. N.p.: n.p., n.d. Print.2. Earth Processes DeltaScienceReaders Earth Processes. New Hampshire: Delta Education, 2011. Print. 3. Our Earth Discovery Kids Amos, Janine. Read and Discover Our Earth. UK: Parragon Books, 2008. Print. 4. Let's Go Rock Collecting by Roma Gans Gans, Roma. Let’s Go Rock Collecting. New York: Harper Collins Publishers, 1997. Print.

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