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Stack #4663143
| Question | Answer |
|---|---|
| Crust | The layer of rock that forms Earth's outer surface |
| mantle | the layer of hot,solid material |
| outer core | a layer of molten iron and nickel that surrounds the inner core of earth |
| latitude | the angular distance of a location north or south of the Equator, measured in degrees from 0° to 90 |
| longitude | measures distance east or west of the prime meridian |
| oceanic ridge | a continuous, 65,000-km (40,000-mile) long underwater mountain range formed by plate tectonics, where divergent plates move apart, allowing magma to rise and create new seafloor. |
| sea floor spreading | The process by which molten materials adds new oceanic crust to the ocean floor |
| divergent boundary | a place boundary where two plates move away from each other |
| convergent boundary | a plate boundary where two plates move toward each other |
| transform boundary | a plate boundary where two plates move past each other in opposite directions |
| subduction | The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary |
| ocean trench | An undersea valley that represents one of the deepest parts of the ocean |
| tectonic plate | a piece of earth's crust that, according to plate tectonics,is pushed by movement in the asthenosphere |
| lithosphere | The cool,solid outer shell of Earth.It consists of the crust and the rigid uppermost part of the mantle and is broken up into segment s,or plates |
| fracture | The breakage of rock into two or more pieces |
| elasticity | The ability of rock to be stretched and then return to it's original position once the stress has been removed |
| stress | The amount of force being applied to rock or surface |
| strain | change in volume,size,or shape that results |
| plate boundary | A place where pieces of the broken lithosphere meet.Boundary types include convergent,divergent,and transform. |
| continental crust | the buoyant, thick ($\sim$30–50 km) outer layer of Earth forming the continents, composed mainly of low-density, felsic rocks like granite |
| oceanic crust | the thin (5–10 km), dense (approx. 3.0 g/cm³) outermost layer of Earth's lithosphere, covering 55% of the surface |
| friction | A force that opposes the motion of objects,which are in contact |
| rift valley | The valley formed by diverging plate boundary |
| inner core | a scorching-hot, solid iron-nickel sphere roughly the size of the Moon, located over 5,000 km deep |
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