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Published byBruce Hart Modified over 9 years ago
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Chapter 1-2 Convection and the Mantle
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Heat always moves from warmer to cooler Three types of heat transfer Radiation – transfer of energy through space No direct contact between heat source and object Ex. Sunlight, heat from an open fire
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Conduction – transfer within a material or between materials touching Ex. Metal spoon in a pot of hot soup – you touch the spoon and the heat conducts from the spoon to your skin. Convection – transferred by the movement of fluids. Movement of currents within a fluid Figure 8, p. 15
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Convection Current – the flow that transfers heat within a fluid Continue as long as heat is added. Heat from the core and the mantle itself causes convection currents in the mantle. Figure 9, p. 16
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Heat from the core and the mantle cause convection currents in the mantle. The mantle flows very slowly Heats up at the bottom of the mantle, rises up, cools, sinks back down. Figure 10, p. 17
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