Answer Key


* 1      Density differences
















* 2      New moon and full moon

















* 3      winter

















* 4      continental shelf connects the coastline with the continental slope which drops off quickly to the abyssal plain.

















* 5      semi-diurnal with 2 highs and 2 lows per day


















* 6      1.02 g/ml

















* 7      fetch, wind speed, and how long the wind has been blowing.


















Marine Biology

* 1      Countershading

















* 2      An estuary is where fresh water and salt water meet. They are nutrient rich and the calm protected waters make good nurseries for fish.


















* 3      Cold nutrient rich water coming up from below to replace top waters that are blown off shore.  Form the basis for a strong fishery


















* 4      energy decreases by 90%


















* 5      zooxanthellae are phytoplankton that live in with the coral polyps providing them with oxygen (for respiration) and carbon (for shell building)



















* 6      sea lettuce


















* 7      bacteria converts hydrogen sulfide into sugars that form the basis for the hydrothermal vent community.



















Volcanoes, Quakes, PT

* 1      3



















* 2      P waves are faster, and can travel through solids and liquids



















* 3      convergent boundary between two continental plates


















* 4      transform boundary


















* 5      Convergent boundary between two oceanic plates.  The less dense plate sinks, melts, magma rises and forms islands.





















* 6      hot spot!


















* 7      vulcanologist


















Rocks and Minerals

* 1      C-12: 6 protons and 6 neutrons

         C-14: 6 protons and 8 neutrons



















* 2      cools slowly

         space to grow

         high concentration of minerals



















* 3      greater than 2 and less than 4



















* 4      igneous rock undergoes weathering to form sediment which undergoes compaction and cementation (lithification) to produce sedimentary rock



















* 5      mafic rocks have a high magnesium and iron content and a low silica content.  They are dark in color.  Felsic rocks have a high feldspar and silica content.  They are light in color.


















* 6      accumulation of materials derived from mechanical and chemical weathering.  Examples:  sandstone, siltstone, conglomerate

















* 7      granite, limestone, slate