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Atmosphere and Ocean
Vocabulary of Heat,Air/Ocean Currents & Weather
| Term | Definition |
|---|---|
| wind | the movement of air caused by differences in air pressure. |
| Coriolis Effect | The deflection of moving objects from a straight path due to Earth's rotation. |
| global winds | the movement of air over the Earth's surface in patterns that are worldwide. |
| jet stream | a narrow band of strong, fast winds high in the upper atmosphere. Each hemisphere has TWO jet streams. |
| local wind | the movement of air over short distances. the winds are usually affected by local landforms, such as mountains). |
| ocean current | the movement of ocean water that follows a regular pattern. |
| surface current | movements of ocean water that occur at or near the surface. Surface winds are usually the mechanism that causes surface currents. |
| deep current | movement of ocean water far below the surface. |
| convection current | a movement of fluids that result from differences in density. The difference in density is caused usually by heating. |
| upwelling | warm, surface waters are replaced by cold, nutrient-rich waters from below due to surface winds which cause surface currents to move from shore. |
| weather | the short-term state of our atmosphere at any given time or place. |
| El Nino | is a periodic change characterized by above-average ocean temperatures across the Pacific Ocean. |
| La Nina | is a periodic change characterized which below-average ocean temperatures occur in the eastern Pacific Ocean. |
| weather forecasting | the analysis of scientific data to predict future weather. |
| meteorology | the study of weather and Earth's atmosphere. |
| station model | is a set of meteorological symbols that represent the weather at a particular observing station. |
| climate | the long-term pattern of weather and changes in the atmosphere over a year, or more. |
| radiation | Type of heat transfer. The transfer of energy through matter or space as electromagnetic waves, such as visible light or infrared waves. |
| convection | Type of heat transfer. The transfer of thermal energy (heat) through circulating motion caused by the heating and cooling of fluids (liquids and gases), causing convection currents |
| conduction | Type of heat transfer. The transfer of thermal energy (heat) through a matter to matter transfer. (ex. Pan on a electric hot plate, or stove). |
| heat capacity | The amount of heat a substance or material can absorb and how fast that transfer of heat happens. (Remember the water and iron!) |