GEO 131 Lecture Notes - Lecture 13: Heat Sink, Aquifer, Water Table
12 Jan 2017
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Document Summary
Lecture 13 - fresh water quantity and quality. 70% of earth is water and 3% of it is fresh water. 20% of fresh water is in canada"s rivers, lakes, groundwater, ice, and snow. Glaciers and year-round snow make up about 2/3 of the world"s freshwater. Most ppl rely on lakes and groundwater for drinking water. 70% of human body is made up of water. A canadian typically uses 326 l of water; 10% for drinking, 90% for flushing toilet, showers, baths, and laundry. 2 h and 1 o atoms bonded by sharing electrons. +ve charge on h side, and -ve charge on o side. Water molecules tend to attract each other bc the +ve ends attract the -ve ones. Water stabilizes air temperatures by absorbing heat from warmer air and releasing heat to cooler air. Water can absorb or release relatively large amounts of heat w/ only a slight change in its own temperature.
