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Brett Thomas
Sci-Plate Tech
| Question | Answer |
|---|---|
| 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 |
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