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internal structure
sariyah graham 6th period
| Term | Definition |
|---|---|
| Lithosphere | outer part of the earth consisting of the crust and the upper mantle |
| Asthenosphere | upper layer of the earth's mantle, below the lithosphere low resistance to plastic flow and convection if thought to occur |
| Magnetic field | Region around a magnetic material or moving electric charge within which force of magnetism acts |
| Hydrosphere | waters on the earth's surface such as lakes and seas also including water over the surface such as clouds |
| Magnetosphere | Astronomical body in the magnetic field is predominant effective magnetic field |
| Atmosphere | gases surrounding the earth or another planet |
| Dynamo effect | Geophysical theory that explains origin of earths main magnetic field in terms of self exciting dynamo |
| Continental drift hypothesis | Alfred wegener scientist who proposed continental drift theory |
| Subduction zone | earth's crust where tectonic plates meet. massive pieces of the earth's crust that interact with each other |
| Lamproites | igneous rock dominated by phlogopite, richterite, oilivine, diopside, leucite, sanidine, minerals may dominate |
| Transform plate boundries | plates slide sideways past each other the lithosphere is neither created or destroyed but is found on the sea floor where they connect segments |
| divergent plate boundries | liner feature that is between two tectonic plate that move away from each other |
| convergent plate boundaries | tectonic plates or fragments of lithosphere that move toward one another and collide |
| conduction | heat or electricity is transmitted through substance and difference of temperature |
| convection | fluid by tendency of hotter less dense material to rise resulting in transfer of heat |
| radiation | electromagnetic waves or moving subatomic particles |
| plasma | free electrons resulting in more or less overall electric charge |
| geomagnetic reversals | earth's magnetic field is now reversed |
| coriolis effect | rotating system that experience a force in a perpendicular direction of motion and the axis of rotation |
| ophiolite | igneous rock largely of serpentine and has been formed from submarine eruption of oceanic crystal and upper mantle material |
| global warming | temperature of the earth's atmosphere attributed to greenhouse effect |
| plate tectonics | structure of the earth's crust and many associated phenomena from lithosphere plates the move slowly over underlying mantle |
| doppler effect | frequent sound, light, or other waves as the source and observer move toward each other |
| greenhouse effect | warmth of the sun in the planets lower atmosphere |
| mantle | part of the earth that is located between the core and the crust is known as the mantle a thick layer that is 80% of the earth's total volume |
| seismograph | measure and record details of the earthquake like force and duration |
| seismic waves | elastic wave in the earth produced by earthquake |
| sea-floor spreading | new areas of oceanic crust upwelling magma at mid ocean ridges |
| xenolith | rock from its original magma but is surrounding country rocks |
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