CK12 Earth Science
ore. So, the ore must be separated from unwanted rocks. Then, the minerals need to be separated out of the ore. The work is stil ...
Figure 3.31: Gemstones come in many colors. ( 25 ) ...
In addition to being beautiful, gemstones are rare and do not break or scratch easily. Gen- erally, rarer gems are more valuable ...
their cutting ability. Copper is used in electrical wiring and the ore bauxite is the source for the aluminum in your soda can. ...
http://www.eia.doe.gov/kids/energyfacts/saving/recycling/solidwaste/metals. html http://www.famsf.org/deyoung/about/subpage.asp ...
//commons.wikimedia.org/wiki/Image:Octahedron.jpg. GNU-FDL,Public Domain. (5) Grzegorz Framski.http://upload.wikimedia.org/wikip ...
(19) Rebecca Calhoun.. CC-BY-SA. (20) Eric Hunt. http://en.wikipedia.org/wiki/Image:Azurite_from_China.jpg,http: //commons.wikim ...
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Chapter 4 Rocks 4.1 Types of Rocks Lesson Objectives Define rock and describe what rocks are made of. Know how rocks are classi ...
Figure 4.1: A rocky mountainside from Costa Rica. ( 16 ) rocks, how rocks are classified, and details of the rock cycle. The fol ...
Figure 4.2: This rock contains several different minerals, as shown by the different colors and textures found in the rock. ( 11 ...
Figure 4.3: This massive boulder is an example of how large rocks can be. It is in Colorado Springs, Colorado. ( 17 ) Figure 4.4 ...
2.Sedimentary Rocks- form by the compaction ofsediments, like gravel, sand, silt or clay (Figure4.5). Sediments may include frag ...
Rocks can be changed from one type to another, and the rock cycle describes how this happens.Figure4.7shows the rock cycle, and ...
are crystallization, erosion and sedimentation, and metamorphism. Let’s take a closer look at each of these: Crystallization. Cr ...
Figure 4.8: James Hutton is considered the “Father of Geology.” ( 6 ) Review Questions Describe the difference between a rock a ...
magma Molten rock below Earth’s surface. mineral Naturally-occurring solid that has a definite crystal structure. molten Somethi ...
Figure 4.9: Granite is an igneous rock used commonly in statues and building materials. ( 21 ) Figure 4.10: Pumice is a light ig ...
Crystallization Igneous rocks form when molten material cools and hardens. They may form either below or above Earth’s surface. ...
Figure 4.12: A close-up of a granite sample. Notice the black and white portions. Each color represents a different mineral in t ...
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