it behaves plastically&flows slowly. Partial melting creates magma which rises less dense 3.Upper:Surrounds the Asthenosphere and is solid. The mantle take up83% of earths volume. Lithosphere:Earth’s outer‚ rigid part‚ consisting of the upper mantle‚ oceanic crust‚ & continental crust. Plates: The lithosphere broken up into individual pieces. They move over the mantles Asthenosphere. Movement of Earth’s Plates:The plates move due to the mantles CONVECTION CELLS: warm material rises toward surface
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Fe-Mg silicate mantle and Fe-Mg-Al Crust. Compositional zonation based on density. 3. Physical properties of aesthnosphere and lithosphere. You should have knowledge of the composition and physical properties of the lithosphere and asthenosphere. Asthenosphere-lithosphere relationship is important to understanding plate tectionics. 4. Evidence of compositional characteristics of the internal structure of the earth. -meteorites are inferred to be composed of same material that earth was
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mantle or asthenosphere below. Occasionally the fiction of these plates builds‚ and eventually the rock gives and this results in an earthquake. The asthenosphere is the inner “soft” portion of the earth. I use the word soft‚ but more accurately it is easily deformed compared to the lithosphere. Because of this softness it allows the tectonic plates to slide and move over it. The asthenosphere is below the lithosphere‚ from around 80km to possibly as deep as 700km. The size of the asthenosphere can vary
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STUDY GUIDE: Chaps. 2 GEOL 111G-Survey of Geology At the end of each chapter are Review Questions and Key Terms. To study for the final‚ be sure to know the answers (or where to find the answers) for the given review question numbers and know the definitions of the key terms indicated. The Key Terms have page numbers for reference in the textbook. CHAPTER 2 Review Questions: #’s are based upon the 10th edition. These may be different in older or newer editions. 2. What was the first line of
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and the inner asthenosphere. Lithosphere is made up different chemicals and uneven rocks. They are however‚ very rigid and brittle. The lithosphere is made up of ten major plates. Its major plates are the African‚ Antarctic‚ Australian‚ Eurasian‚ North American‚ South American‚ Pacific‚ Cocos‚ Nazca‚ and Indian. Of course there are also several minor plates. The layer below the lithosphere is the asthenosphere. It is very
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Rock cycle is the cycle of rock transformation which affects all rocks. The cycle involves all parts of the crust. When the rocks are subducted into the asthenosphere due to compression‚ the rocks melt into magma. The melting of rocks intensifies the pressure in the asthenosphere. Cracks develop. When cracks extend downward and reach the magma‚ the pressure of magma is released. Magma then extrudes out of the crust along the cracks to the earth’s surface. It results
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The causes of tectonic plate movement and how different processes have shaped New Zealand’s landforms occur nearly every single day. In fact one of these processes is happening right now‚ somewhere on the Earth. The 3 major processes are folding‚ faulting and volcanism. While these take place‚ another “force” is also acting‚ changing the shape of our continents‚ and Earth itself‚ the tectonic plate movement. Earth’s outer shell‚ long thought to be a continuous‚ unbroken‚ crust is actually a fluid
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rate of movement of the Pacific Plate using information about the age of the Hawaiian Islands. Lesson Objectives Students will: 1. Describe the basic characteristics of Earth’s three layers: crust‚ mantle and core 2. Define the lithosphere and asthenosphere National Science Education Standards‚ Grades 9-12 Unifying concepts and processes Physical science Earth and space science Ocean Literacy Principles The Earth has one big ocean with many features DCPS‚ High School Earth Science ES.7. Plate tectonics
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Planet Earth contains three compositional layers- CORE‚ MENTLE & CRUST. Core: At the centre is the densest of the three layers‚ the core. The core is a spherical mass‚ composed largely on metallic iron‚ with lesser amount of nickel and other elements. Mantle: The thick shell of dense‚ rocky matter that surrounds the core is mantle. The mantle is less dense than the core but denser than the outer most layer‚ the crust. Crust: Above the mantle lies the thinnest and outermost layer‚ the crust
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Test bank for Blue Planet 3e Chapter 3 Essay questions (2) 1. Explain how the chemical composition of a mineral controls its crystal structure. 2. Some minerals contain economically important elements. If you were prospecting in the field‚ what tools would you carry to help you identify different minerals? Fill in the blank (18) 1. The three common ------ of matter with which we are most familiar in our everyday lives are solid‚ liquid‚ and gas. 2. --------- are homogeneous masses
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