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Earth Science vocab
| Question | Answer |
|---|---|
| Syncline | Downward fold of a rock. |
| Epicenter | Is right above the focus most of the damage from the earthquake usually occurs there. |
| Vents | Cracks in the earth's surface. |
| Volcano | Are areas of earth's surface through which magma and volcanic gases pass. |
| Geology | The study of orgin history, structure and process that shape earth. |
| Divergent Boundary | The place where plates move apart from each other. |
| Transform | Place where plates slide past each other. |
| Convergent Boundary | Place where plates Collide. |
| Theory of Continental Drift | The belief that continents moved to the position they are in the present. |
| Pangea | Supercontinent; all continents joined as one. |
| Tectonic Plates | Set of jigsaw-like pieces that slowly move on the Earth's crust. |
| Anticlines | Upward fold of a rock. |
| Fault Block | Crack in the crust. |
| Focus | The point where an earthquake starts. |
| Seismic waves | Waves that travel out from an earthquake. |
| Magma | Molten Rock. |
| Magma Chamber | Is a body of molten rock deep underground that feeds a volcano. |
| Pyroclastic flow | Flows are produced when enormus amounts of hot ash, dust, and gases are ejected from a volcano. |
| Inner Core | Is located at the center of the earth and is composed of nickel and iron. |
| Outer Core | Only liquid layer between the Inter core and mantle. |
| Mantle | The thickest layer made of hot rock. |
| Crust | The thinnest layer that surrounds the earth that is hard and rigid. |
| Weathering | The breaking down of the lithosphere by the wind, ice, plants, animals and chemical changes. |
| Principle of uniformity | The process that have changed out world still changes today. |
| Mechanical Weathering | The process of breaking down rocks to smaller pieces. |
| Chemical weathering | The process that alters mineral composition. |
| Primary Wave | Travels the fastest. |
| Secondary wave | Slower than the primary wave. |
| Subsurface | Below the surface of the earth. |
| Lava | Magma that flows into the earth's surface. |
| Surface wave | The only wave that doesn't start inside the earth. |
| Pyroclastic flow | Flows are produced when enormous amounts of hot ash, dust, and gases are ejected from a volcano. |
| Viscosity (Viscous) | Having a thick, sticky consistency between solid and liquid; having a high viscosity. |
| Crater | Is a funnel-shaped hole around the central vent. |
| Caldera | A large, semicircular depression that forms when the magma chamber below a volcano partially empties and causes the ground above to sink. |
| Rock Cycle | The series of rock changes from one form to another. |
| Erosion | The process by which wind, water, ice or gravity transports soil and sediment from one location to another. |
| Deposition | The process in which material is laid down. |
| Igneous Rocks | Rocks formed by cooling of lava and magma. |
| Sedimentary Rocks | Rocks formed through deposition and sediment in layers. |
| Metamorphic rocks | Rocks that was once formed and now has changed to another by heat and pressure. |
| Intrusive Rocks | Rocks formed from the cooling and solidification of magma beneath the earth surface. |
| Extrusive Igneous Rocks | Rocks that forms as a result of volcanic activity at or near the earth's surface. |
| Strata | Layers of Rock (singular, stratum. |
| Stratsafaction | The process in which sedimentary rocks are arranged in layers. |
| Index Minerals | Used to estimate the temperature, depth and pressure of which a rock undergoes metamorphism. |
| Foliated | The texture of a metamorphic rock in which the mineral grains are arranged in planes or bands. |
| Non Foliated | The texture of a metamorphic rock in which the mineral grains are not arranged in planes or bands. |