Barnett Oceanography
| Description: | Barnett - Oceanography 1 |
| Category: | Earth Science |
| Created by: | ebarnett on 2007-08-31 |
| Question | Answer |
| salinity | amount of solid material (like salt) dissolved in water |
| deep ocean trench | place on the seafloor where one plate is subducting beneath another and a long narrow depression forms |
| mid-ocean ridge | a chain of underwater mountains |
| upwelling | the rising of cold water from deeper layers to replace warmer surface water that has been moved away; brings nutrients to the ocean surface |
| abyssal plains | deep, extremely flat features |
| density | a measure of the amount of matter in a given space |
| continental shelf | part of the ocean next to the continent that is shallow and fairly flat |
| continental slope | part of the ocean next to the continental shelf where the seafloor drops off at a steep slope |
| current | a mass of water is moved by wind or density differences to another part of the ocean |
| El Nino | periodic warming of the ocean that occurs in the central and eastern Pacific; can change the weather in many parts of the world |
| thermocline | layer of the ocean around 300 to 1000 meters deep where there is a rapid change in temperature with depth; creates a barrier for many marine life forms |
| Pacific | this is Earth's largest ocean |
| Arctic | this is the smallest, most shallow ocean |
| continental rise | Gradual incline between ocean basin and continental slope |
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Charateristics of waves, surface currents, and density currents wave- a ryphmic movement that carries energy through out matter of space. surface currents-current that flows at the ocean surface. density currents- currents that involve the transfer of heat Affection on beaches, barrier islands, estuaries, and inlets by waves tides and currents waves- they affect beaches by when they rise they erode the surface.they affect barrier islands by having them in the way they erode the sides of the beach more than the middle b/c the islands blocking the middle.they erode the islands too.they affect estuaries by washing the fishes eggsaway with the flow.the affect inlets by eroding them to make them even wider. tides- they affect them by covering more of the beach and less of the beach depending on high tide and low tide.they affect barrier islands by completly covering the islands during high tide andduring low tide the whole island could be showing.when its high tide estuaries for fish could be closer to the shore but when its low tide the estuaries are farther away.during high tide none of the inlet could be showing but during low tide all of it could be showing. currents- could push the wave so it would cover the whole beach.could flow hard and erode the island farther back. could move the estuaries different places. could move the water so quickly it looks like theres barely any inlet. |
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