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Earth Materials Worksheet Essay

2200 words - 9 pages



Earth and Earth Materials Worksheet

Melissa Cordle

GLG/150

October 18, 2015

Robert Hogan

University of Phoenix Material

Earth and Earth Materials I Worksheet

From Visualizing Earth Science, by Merali, Z., and Skinner, B. J, 2009, Hoboken, NJ: Wiley. Copyright 2009 by Wiley. Adapted with permission.

Part 1

Complete the WileyPLUS® GeoDiscoveries Earth Drag and Drop from Chapter 1. Label and describe each letter in the space below.

A. Ocean – large body of salt water
B. Continental Crust - A thick part of the Earth’s crust that forms large landmasses.
C. Oceanic Crust - A thin part of the Earth’s ...view middle of the document...

For example, a diamond is composed of only carbon. Minerals are formed without any involvement from an organism.
Rocks are constructed of one or more minerals. It is composed of minerals but is not classified as a mineral. Rocks are one or more minerals packed together to form a hard solid. Rocks are grouped into three basic rock families: metamorphic, igneous, and sedimentary.

2. What types of tests are used to identify minerals?

Minerals are naturally happening, inorganic materials with distinctive chemical and physical properties. Minerals are identified based on physical and chemical properties. Many of the properties of minerals are controlled by the elements that are present in the minerals and their specific arrangement.

Some of the tests that can be conducted on minerals is color, luster, streak, crystal structure, and hardness. A mineral’s color can be altered by the impurities found in the mineral. Luster is the way light is reflected off the surface of a mineral. It is defined as metallic or nonmetallic. Streak is the color of the mineral in a powder form. The test is done by scraping the mineral across a white streak plate. Some minerals have a streak that is different color as the mineral itself. Most metallic minerals have a dark color in the streak. Some minerals have a crystal structure. The crystal pattern of minerals is structured by the arrangement of the atoms that make up the mineral. Hardness is a test to ability of one mineral to scratch another mineral. The softer mineral will develop the scratch. The hardness test is done by scratching the unknown mineral with another mineral.

Part 3

1. Label the part and mineral resource that compose each part of this lightbulb. Refer to the diagram in Chapter 2.

A. Bulb is made up of silica, trona, lime, coal, and salt.
B. Lead in wires is made up of copper and nickel.
C. Button and button rod made up of silica, trona, lime, coal, salt, and lead.

D. Fuse is made up of nickel, manganese, copper, and silicon alloys.

2. Choose two minerals and describe where these minerals are found in nature and the environmental impact of extracting these minerals from the earth. You may need outside resources.

Talc is a mineral that is the softest on the Mohs hardness scale. It is mostly produced in China, South Korea, India, United States, Brazil, Finland, Japan, and France. Talc is produced from an open pit mine procedure. It is extracted from rock that is drilled, blasted, and crushed in the mining technique. Dangerous environment hazards exist during the steps of open pit mining process. The mining technique exposes rock that has not been exposed for many years. When these areas of rock are crushed, it allows for the escape of radioactive elements, asbestos minerals, and metallic dust particles. During the separation process, rock slurry is produced. The slurry is a mixture of pulverized rock and liquid. It produces toxic and radioactive elements...

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