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Brett Thomas

Sci-Plate Tech

asthenosphere the soft layer of the mantle on which the lithosphere floats
basalt a dark colored, igneous rock that has a fine texture and is found in the oceanic crust
conduction the transfer of heat within a material or between materials that are touching
continental drift the hypothesis that the continents slowly move apart
convection the transfer of heat by movement of a fluid
convection current the movement of a fluid, caused by the difference in temperatures that transfers heat from one part of the fluid to another
convergent boundary a plate boundary where two plate connect
crust the layer of rock that forms the Earth's outer surface
deep-ocean trench a deep valley along the ocean floor beneath which oceanic crust slowly sinks into the mantle
density the amount of mass in a givern space; mass per unit volume
divergent boundary a plate boundary where two plates break apart from each other
fault a break in Earth's crust where masses of rock slip past each other
fossil a trace of an ancient organism that has been preserved rock
granite a light colored igneous rock that is found in the continental crust
inner core a dense sphere of solid iron and nickel at the center of the Earth
lithosphere a rigid layer made up of the uppermost part of the mantle and the crust
mantle the layer of hot, solid material between the Earth's crust and core
mid-ocean ridge an underwater mountain
outer core a layer of molten iron and nickel that surrounds the inner core of Earth
plate sections of the Earth
pressure the force exerted on a surface divided by the area over which the force is exerted
plate tectonics the theory that pieces of Earth's lithosphere are in constant motion, driven by convection currents in the mantle
radiation the transfer of energy through space
rift valley a deep valley that forms where two plates move apart
sea-floor spreading the process by which molten material adds new oceanic crust to the ocean floor
sonar a device that determines the distance of an object underwater by recording echoes of sound waves
subduction the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle
transform boundary a plate boundary where two plates move past each other in opposite directions
Created by: bbbkthomas