ENV100Y5 Lecture Notes - Lecture 42: Pore Space In Soil, Drainage Basin, Ocean Current

• School: UTM
• Department: Environment
• Course: ENV100Y5
• Professor: Barbara Murch

Document Summary

Session 40: freshwater systems & water resources (i) (11-1-16) Water is what makes us unique: shapes the surface of the earth, allows for life, makes earth different from all other planets, exists in all 3 states, atmosphere, on surface, under the ground. Important in moving heat from equator to the poles: rises as vapour; falls as rain/snow. Water on surface: ocean currents moves things around the world (including unfortunately contaminants, sculpts terrestrial landscape, carrier for many substances. Hydrology is water science : study of water in the hydrosphere, both on and under the ground, movement, distribution, quantity, quality, reservoirs, processes, ecosystems. Water is abundant on earth, but freshwater = few dissolved salts. Most of this is tied up in glaciers and ice caps. Tremendous increase in transpiration, evaporation, changes in water patterns. The distribution of earth"s water & the hydrologic cycle (images on next page) Surface freshwater: rivers and streams, springs, lakes and ponds, wetlands.