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CHAPTER 4.2 Convection and the Mantle
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Standard S.6.4.c Students know heat from Earth’s interior reaches the surface primarily through convection.
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Learning Goals
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SWBAT explain how heat is transferred. SWBAT explain what causes convection currents. SWBAT explain what causes convection currents in the mantle.
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radiation The transfer of energy through space
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conduction Heat transfer within a material or between materials that are touching
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convection Heat transfer by the movement of currents within a fluid.
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Density A measure of how much mass there is in a volume of a substance.
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Convection Current The flow that transfers heat within a fluid. A fluid can be a liquid or a gas.
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Three types of heat transfer There are three types of heat transfer: radiation, conduction, and convection.
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Three types of heat transfer There are three types of heat transfer: radiation, conduction, and convection.
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Three types of heat transfer There are three types of heat transfer: radiation, conduction, and convection.
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Three types of heat transfer There are three types of heat transfer: radiation, conduction, and convection.
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Three types of heat transfer There are three types of heat transfer: radiation, conduction, and convection.
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Density When a fluid is heated, its density decreases. When it cools, its density increases.
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Convection Currents Heating and cooling of the fluid, changes in the fluid’s density, and the force of gravity combine to set convection currents in motion.
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Convection Currents Heat from the core and the mantle itself causes convection currents in the mantle.
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Homework Workbook Chapter 4, Section 2; pgs 75-77 #1-14
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