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World Geography 3202 Chapter 1 Land form Patterns and Processes 1 What is seismology Is the study of earthquakes 2 List the zones of the earth For each zone state the thickness and two features of each AInner Core 2700 km solid and made mostly of iron with lesser amounts of nickle BOuter Core 2300 km molten and made mostly of iron and nickle CMantle 2900 km divided into lower and upper levels the asthenosphere is in plastic state sometimes acting like a liquid DMohorovicic Discontinuity ------- Boundary between mantle and lithosphere at which earthquake waves abruptly change speeds ELithosphere 1-100 km lowest density solid and rigid and can be divided into layers one under the ocean basins and one making up continents 3 A What are the two main materials that make up the lithosphere The two main materials that make up the earths lithosphere are aluminum and magnesium 3 B What are minerals Minerals are the combination of elements 3 C What are the two most common elements in minerals The two most common elements in minerals are oxygen and silicon 4 What is the difference between igneous and sedimentary rock Igneous rock forms when molten substance underneath the surface called magma or lava cools down and crystallizes Sedimentary Forms when groups of rock pieces merge and cement together 5 What is metamorphic rock Metamorphic referring to the change in a rock from its original from by heat or by pressure beneath the earths surface Metamorphic rock is a rock thus changed 6 What is it meant by topography Topography the natural and human features of the earths surface 7 A What are the two types of flat regions The two types of flat regions are plains and plateaus 7 B Describe both
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