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Chapter 9 vocabulary

Earth's Crust in Motion

VocabularyDefinition
convection the transfer of thermal energy by movements of a fluid
convection current the movement of a fluid, caused by differences in temperature, that transfer thermal energy from one part of the fluid to another
conduction the transfer of thermal energy through direct contact between particles of matter
radiation the transfer of energy by electromagnetic waves
sea - floor spreading the process by which molten material adds new oceanic crust to the ocean floor
subduction the process by which oceanic crust sinks beneath a deep - ocean trench and back into the mantle at a convergent plate boundary
deep - ocean trench a deep valley along the ocean floor through which oceanic crust slowly sinks towards the mantle
mid - ocean ridge the undersea mountain chain where new ocean floor is produced; a divergent plate boundary
Created by: bekah0515
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