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scienc test 19
Ocean, tides, and waves test
| Question | Answer |
|---|---|
| name the 4 major oceans | Pacific,Indian, and Atlantic |
| how much of the Earths surface is covered in water | 71% |
| What is a large body of saltwater partailly or nearly completely enclosed by land | seas |
| what is a seamount | any submerged mountain like structure on the sea bottom |
| what is a seamount with a flat top called | guyot |
| what is a deep cnyon on the sea floor that is usually present where 2 plates come together | trench |
| what is coral made of | calcium carbonate |
| what is a corla reef that is located away from land that is seperated by a lagoon | barrier reef |
| what is a ring of low coral islands and reef surrounding a central lagoon that is in most cases built on a dummerged volcanoe. | atoll |
| what is the most abundante salt in the ocean water called | sodium choloride |
| what is the average time between particles entrance into the ocean and its removal by some means | residence times |
| what is the removal of salt and minerals from sea water to produse fresh drinkable water | distillation |
| how does the moon effect the ocean water | its gravity attract water on the side of the earth facing the moon causing a bulge |
| whaen does the spring tide occur and is it a high or a low tide | when the sun moon and earth are lined up, higher |
| what is a lower then usuall tide that occurs when the earth, sun, and moon form a right angle | neap tide |
| what is a water wave in which the top of the wave falls over on the forward side of the wave | breaker |
| what is a wave that appraoches the shore at an angle also produce a current that flows parallel to the shore | longshore current |
| what is a strong surface current that flows back from the shore | rip current |
| what is the best way to swim out of a rip current | to swim at a right angle |
| what is a cave formed by erosion of a cliff face by waves | sea cave |
| what is a type of ocean erosion that look like a natural bridge | sea arch |
| what is a mass of rock that wave erosion has isolated from the shore | stack |
| what is a narrow sand formation deposited by waves and currents that extends out from a headland often across from a bay orinlet | spit |
| what is a spit with a sharp bend | hook |
| what is formed when waves deposit sand across the nountain of a bay or a long coastline but hasn't connected with the mainland | barrier lisland |
| what is a current that flows in a clockwise pattern | gyre |
| which way do the northern and southern hemsiphere currents flow | clock wise, and counter clock wise |
| what is an east flowing current along the equater dividing the northern and southern west flowing currents | counter current |
| what is a fast subsurface current caused by the wieght of a large amounts of suspended sediment | turbidity current |
| what is a current created by the tendency of denser more saline water to sink and displace less dense water | density current |
| what is less saline water which rises upwellings | cold water rising |
Created by:
oliviaobrien
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