Short Paper: Mantle Convection‚ The Forces Behind Plate Motion PHSC 210-Spring B Term‚ Elements of Earth Science February ‚ 2014 Short Paper: Mantle Convection‚ The Forces Behind Plate Motion Introduction The paper is about plate mantle convection‚ the forces behind plate motion. Lutgens & Tarbuck (2014) found “Convection is a type of heat transfer that involves the actual movement of a substance” (p. 177). Plate mantle convection is described by Merriam-Webster’s
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free convection and to determine the heat transfer coefficients for several rods. These objectives were met by heating several rods and allowing them to cool through free convection in air‚ free convection in water and forced convection in water- while monitoring their change in temperature over change in time. Seven heat transfer coefficients were determined during the laboratory for various rods. A copper rod underwent free convection in air‚ free convection in water and forced convection in water
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Heat transfer Heat transfer is the transition of thermal energy from a hotter object to a cooler object ("object" in this sense designating a complex collection of particles which is capable of storing energy in many different ways). When an object or fluid is at a different temperature than its surroundings or another object‚ transfer of thermal energy‚ also known as heat transfer‚ or heat exchange‚ occurs in such a way that the body and the surroundings reach thermal equilibrium‚ this means that
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temperature causes heat to be conducted along the rod. • Convection. In addition to conduction‚ heat can also be transferred by a fluid that is in motion; that process is known as convection. The cooling system of an automobile engine‚ for instance‚ operates by pumping a mixture of water and antifreeze through passageways inside the engine’s block. Excess heat is removed from the engine‚ transferred temporarily to the coolant by convection‚ and ultimately released into the air by the vehicle’s radiator
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Distinguish thermal energy from other forms of energy‚ and heat transfer from other forms of energy transfer. • Perform general energy balances as well as surface energy balances. • Understand the basic mechanisms of heat transfer‚ which are conduction‚ convection‚ and radiation‚ and Fourier’s law of heat conduction‚ Newton’s law of cooling‚ and the Stefan–Boltzmann law of radiation. • Identify the mechanisms of heat transfer that occur simultaneously in practice. • Develop an awareness of the cost associated
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Energy Transformation Conduction‚ convection‚ and radiation are things that exist in our life. Thanks to that stuff we have things like electricity and things to cook too. I am going to explain things about energy transformation. Heat transfer is the way heat moves through matter to change the temperature of other objects. There are three types of heat transfers‚ Conduction‚ Convection‚ and Radiation. The first kind of heat transfer‚ conduction‚ is heat transferring through direct contact of materials
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showing structure of the Earth Distribution The Earth’s crust is broken up into pieces called plates. Heat rising and falling inside the mantle creates convection currents generated by radioactive decay in the core. The convection currents move the plates. Where convection currents diverge near the Earth’s crust‚ plates move apart. Where convection currents converge‚ plates move towards each other. The movement of the
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of the electrons in an atom‚ the negatively charged particles. Because the electrons are moving around so quickly we have electricity. 1. Name one similarity between convection‚ conduction and radiation. They are all forms of thermal energy. 2. Describe the differences between convection‚ conduction and radiation. Convection is the transfer of energy due to hotter‚ less dense material rising and colder‚ more dense material sinking. Conduction is actually
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As the power increases linearly the Qtot also increases but only to a certain point. When the airspeed is greater than 2m/s the Qtot value decreases. The air is cooling the cylinder. The air velocity affects the radiation and convection. The convection decreases as the airspeed increases but radiation increases. The speed of the air increases the radiation due to the passing air and that it is at room temperature (large temperature difference)‚ as soon as the air heats up it has already
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thermal conductivity of the wall? What is the value of the convection heat transfer coefficient‚ h? 2) The rear window of an automobile is defogged by passing warm air over its inner surface. If the warm air is at T∞‚i = 40oC and the corresponding convection coefficient is hi =30 W/m2.K‚ what are the inner and outer surface temperatures of 4 mm thick window glass‚ if the outside ambient air temperature is T∞‚o = -10oC and the associated convection coefficient is ho = 65 W/m2.K? 3) The steady-state temperature
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