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Chapter 7 Plate Tect
| Term | Definition |
|---|---|
| A soft layer of the mantle on which tectonic plates move | Asthenosphere |
| The transfer of heat from one substance to another by direct contact of particles of matter. | Conduction |
| The thin & solid outermost layer of the Earth above the mantle. | Crust |
| The hypothesis that states that the continents once formed a single landmass broke up, and drifted to their present locations. | Continental Drift |
| The transfer of heat by movements of a fluid. | Convection |
| The movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another. | Convection Current |
| A deep valley along the ocean floor through which oceanic crust slowly sinks toward the mantle. | Deep-ocean Trench |
| The boundary between 2 tectonic plates that are moving away from each other. | Divergent Boundary |
| Fault A break in a body of rock along which 1 block sided relative to another. | Fault |
| The movement of energy from a warmer object to a cooler. | Heat Transfer |
| the solid, dense center of our planet that extends from the bottom of the outer core to the center of the earth | Inner Core |
| The solid, outer layer of the earth that consists of the crust & the ridged upper part of the mantle | Lithosphere |
| The layer of rock between the earth's crust & core. | Mantle |
| Places where sea floor spreading takes place. | Mid-Ocean Ridge |
| The liquid layer of the earth's core that lies beneath the mantle & surrounds the inner core | Outer core |
| All of the continents joined together | Pangaea |
| The theory that explains how large pieces of the earth outermost layer, called tectonic plates, move & change shape. | plate tectonics |
| A section of the lithosphere that slowly moves over the asthenosphere. | Plate |
| The amount of force pushing on a surface or area. | Pressure |
| The direct transfer of energy though empty space. | Radiation |
| A deep valley that forms where two plates move apart. | Rift Valley |
| The process by which new oceanic lithosphere forms as magma rises toward the surface solidifies/ | Sea-floor spreading. |
| Vibrations from an earthquake | Seismic Wave |
| A system that determines the distance of an abject under water by recording echoes of sound waves. | Sonar |
| The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at convergent plate boundary. | Subduction |
| The boundary between tectonic plates that are sliding past each other horizontally. | Transform Boundary |
| The boundary formed by the collision of 2 lithosphere plates. | Convergent Coundary |
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