ENVS 1126 Lecture : OCS 1005 Lecture 1
Document Summary
Record-breaking marina trench dive: ocean water is very heavy because of the atmosphere (1 atmosphere pressure, 100m= 10 atmosphere pressure. Relative amount of water on earth"s surface: the relative amount of water in various locations on or near earth"s surface. More than 97% of water lies in the ocean. Of all water at earth"s surface, ice on land contains about 1. 7%, ground water 0. 8%, rivers and lakes 0. 007%, and atmosphere 0. 001: 97% is mostly water (in terms of mass or volume) How much percentage of earth"s surface is covered by land: 30%, proportion of ocean versus land, the distribution of land and ocean in the northern and southern. Most of the land located in northern hemisphere: more land in northern hemisphere and more water in southern hemisphere. Characteristics of the world oceans: average depth= 3,796 m (12,451 ft) average land elevation: 840m (2,772 ft, deepest spot= mariana trench 11,022m (36,163 ft) highest spot on land=
