answer the following questions in complete sentences. Part 1: What Good is a Rock? 1. Why is it conceivable to use obsidian as a modern day cutting tool? 2. Describe the flint knapping process. The process of creating chipped stone tools such as knife blades, scrapers, arrowheads, and spear points. A small group of flint Knappers carries this tradition today by striking these rocks with harder rocks to create exact shapes and edges. 3. Why was obsidian considered so valuable
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All about Sedimentary Rocks Zakk Wylde SCI/245 January 30, 2011 Stephen Hallin The changing plate interactions and shifting plate junctures, helps us to understand the sedimentary basins. Although plate tectonics is mostly about the horizontal movements of the lithosphere
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The Rock Cycle Thesis: * The rock cycle is a continuous process that occurs over millions of years. It makes new rock, destroys old rock, and recycles the ingredients of the Earth's crust over and over again! Rocks come in cool colors, shapes, textures, and sizes and are found all around you, but how much do you really know about them? What is a Rock? * Simply put a rock is a group of minerals bound together. * Can consist of largely one mineral or several minerals. 3 Types
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[pic] Axia College Course Design Guide SCI/245 Version 5 Physical Geology Start Date: 9/24/2012 End Date: 11/25/2012 Course Materials Murck, B. W., Skinner, B. J., & Mackenzie, D. (2008). Visualizing geology. Hoboken, NJ: John Wiley & Sons. Axia College’s Writing Style Handbook
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Sedimentary Rocks Sedimentary rocks are formed because of the overburden pressure as particles of sediment are deposited out of air, ice, wind, or water flows carrying the particles in suspension. As sediment deposition builds up, the overburden (or 'litho static') pressure squeezes the sediment into layered solids in a process known as nitrification ('rock formation') and the original connate fluids are expelled. The term digenesis is used to describe all the chemical, physical, and biological
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cause destruction over a wide area and may be felt thousands of miles away. There are three types of rock found in Hawaii. Igneous, sedimentary, and metamorphic which are parts of the rock-forming process where rocks go through the rock cycle, where all of these rocks are subject to the process of changing from one rock type to another. Reference Igneous, Sedimentary, and Metamorphic Rocks (2011) Exploring Earth. Retrieved 2:42, December 12, 2011, from
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Rock Report Exercise Due Date: 4/1/2014 Name: Rianne Richter Class: 1121k Grade: /35 After you have finished Lab Exercises 4, 5, and 7, complete the following questions. You may have to refer to the exercises for assistance to locate specific answers. 1. Match the rock type with the correct statement describing its formation. (3 point). ❖ Found where the atmosphere
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asthenosphere, where rock is in a plastic, semi-molten state and so deforms in a ductile manner. -Igneous rocks are crystalline solids which form directly from the cooling of magma. This is an exothermic process and involves a phase change from the liquid to the solid state. The earth is made of igneous rock - at least at the surface where our planet is exposed to the coldness of space. Igneous rocks are given names based upon two things: composition and texture. -Sedimentary rocks are called secondary
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the gradual breakdown of rock to sand, and then to silt, or powdered rock, and finally to clay through physical means. Mechanical weathering occurs in a variety of ways. For example, Heat and cold may cause minerals within a rock to expand and shrink at different rates, creating cracks. Water may seep into those cracks and freeze, expanding and splitting the rock. A raging river or ocean waves can smash rocks against each other, wearing the outsides smooth and turning rocks into sand. Or sand carried
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Sean Davis GE 254 8/12/13 The Rock Cycle The rock cycle is the natural transformation of rock over a period of time. Rocks are created and destroyed in cycles. The rock cycle is a model that describes the formation, breakdown, and reformation of a rock as a result of sedimentary, igneous, and metamorphic processes. Rocks are made of minerals; which are naturally occurring, crystalline solid of definite chemical composition and a characteristic crystal structure. Rocks are any naturally formed, nonliving
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