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Seawater
Seawater, or sea water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L, 35 ppt, 600 mM). This means that every kilogram (roughly one liter by volume) of seawater has approximately of dissolved salts (predominantly sodium () and chloride () ions). The average density at the surface is 1.025 kg/L. Seawater is denser than both fresh water and pure water (density 1.0 kg/L at ) because the dissolved salts increase the mass by a larger proportion than the volume. The freezing point of seawater decreases as salt concentration increases. At typical salinity, it freezes at about . The coldest seawater still in the liquid state ever recorded was found in 2010, in a stream under an Antarctic glacier: the measured temperature was . Seawater pH is typically limited to a range between 7.5 and 8.4. However, there is no universally accepted reference pH-scale for seawater and the difference between measurements bas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Andrés (island)
, native_name_lang = icr , sobriquet = , image_name = San Andres Island Montage.jpg , image_size = 300px , image_caption = Top to bottom, left to right: A typical San Andrés house, San Andrés Skyline, Johnny Cay, Spratt Bight Beach, First Baptist Church and the Sunrise Hotel , image_alt = , map_image = San Andres Island.png , map_caption = , location = , pushpin_map = Colombia Isla de San Andrés#Colombia#Caribbean , pushpin_label = , pushpin_label_position = left , pushpin_map_alt = , pushpin_relief = 1 , pushpin_map_caption = , coordinates = , archipelago = , total_islands = , major_islands = San Andrés, Providence and Saint Catherine , are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
