the earth’s crust known as tectonic plates. He put forward the idea that all the earth’s continents were once conjoined in one supercontinent called Pangaea‚ and that these continents were moved by convection currents over a period of many millions of years in to their current positions. These convection currents are made by radioactive energy in the earth’s core causing the semi molten mantle to rise and fall moving the tectonic plates above them. These tectonic plates cause both volcanic and seismic
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or central region. The sun’s interior consists of the core‚ the radiation zone‚ and the convection zone. The sun’s energy is produced in its central core. The radiation zone is a region of very tightly packed gas where energy is transferred mainly in the form of electromagnetic radiation. The convection zone is the outer most layer of the sun’s interior. Hot gases rise from the bottom of the convection zone and gradually cool as they approach the top. Cooler gases sink‚ forming loops of gas
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A TECHNICAL REPORT ON PHASE CHANGE MATERIALS & SOLAR WATER HEATING USING PHASE CHANGE MATERIALS INDEX 1. Introduction 2. Types of Phase Change Materials 3. Selection criteria 4. Principle of solar water heater with phase change materials 5. Heat transfer analysis between water and PCM’s 6. Results 7. Conclusion CHAPTER – 1 INTRODUCTION PHASE CHANGE MATERIALS: The materials which undergo either boiling or condensing by absorbing heat from a medium or liberating
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Associate Program Material History of Rock Worksheet Write a 500- to 750-word explanation regarding the role of plate tectonics in the origin of igneous rocks. | Plate tectonics play a major role in the origin of igneous rocks. Igneous rocks are called fire rocks and are formed either| |underground or above ground. Underground‚ they are formed when the melted rock‚ called magma‚ deep within the earth becomes trapped| |in small pockets. As these pockets of magma cool slowly underground
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CHAPTER I 1. Fuzzy control Fuzzy control is a practical alternative for a variety of challenging control applicationssince it provides a convenient method for constructing nonlinear controllersvia the use of heuristic information. In a sense fuzzy systems can be “trained” and can “learn” how to perform throughout a control task and are considered as intelligent control system. Fuzzy control system design is based on empirical methods‚ basically a methodical approach to trail-and-error. The
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Genocide is prohibited by the rule of jus cogens and can be characterised as crime under international law under the 8resolution 96 (1) of the UN general assembly in addition to the ILC commentaries text in the 1969 Vienna Convection Law of treaties and in Art 40 daft articles 2001 on state
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Homeostasis - Thermoregulation Homeostasis is the ability of a cell or organism to maintain a stable internal environment despite fluctuating external environmental conditions. An animal will maintain this state of equilibrium through adjustment mechanisms that keep the conditions of its cells and body within a narrow range (SOC 2 n.d.). Homeostasis is crucial to the survival of an organism‚ by maintaining a stable environment‚ it enables cells to be functioning optimally‚ giving an organism the
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Hurricane Maria is Attacking North Carolina Angelane Grace Sarona HUMSS 11.A The East Coast is receiving high winds and tremendous surf from Hurricane Maria. Maria will weaken to a tropical storm by Tuesday night‚ according to the National Hurricane Center. It is expected that the dangerous core of the storm will move southeast coast of the United States during the following days. Image from weather.msfc.nasa.gov/sport/ Hurricane Maria caused devastation in the Caribbean. It results
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Holmes on the other hand had a theory that heat was trapped in the Earths convection currents‚ he used seismic profiling which is throwing explosives in to the sea and seeing how they would react to see the shape of the sea bed‚ as this would show the shape of the oceanic plates‚ however Holmes was wrong with his theory as he did not understand that the solids within the Earths mantle could flow‚ this causes convection currents and therefore allows the plates to move. In 1962 Harry Hess who is
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UNSTEADY STATE HEAT TRANSFER Heat transfer processes are prominent in engineering due to several applications in industry and environment. Heat transfer is central to the performance of propulsion systems‚ design of conventional space and water heating systems‚ cooling of electronic equipment‚ and many manufacturing processes (Campos 3). Unsteady state conduction is the class of heat transfer in which the temperature of the conducting medium varies with time and position. This occurs frequently in
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