Exam Two Notes

Exam Two Notes - WaterResources 1:36:00PM Resources:...

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Water Resources 3/18/2010 1:36:00 PM Sink holes are caused by the extraction of water Resources : all of those things that are necessary or important to human life and  civilization Earth resources: water, minerals, energy, air, soils PROBLEM: exploitation of resources results in many being consumed at a rate faster  than they can be replaced oil Renewable Resource : replaceable on a human time scale (months to years) food water (surface flow)  energy (wind, solar, water) air  Nonrenewable   Resources : “nature renews them more slowly than we use them”  (thousands to millions of years)  minerals (copper, iron, gold)  soil water (groundwater) energy (petroleum, coal) Even nonrenewable resources are often being replaced by natural processes but just  too slowly to do us any good petroleum in Gulf of Mexico, soils forming on glacial till in Rockies, groundwater  recharging in the Ogallala Aquifer in the West Important for resource exploitation is the knowledge of how much is available – this  has led to the technical distinction between resource and reserve by the US  Geological Survey and the US Bureau of Mines (now defunct) Resource : concentration of a naturally occurring material (solid, liquid, gas) in or on  the crust of the earth in such a form that economically extraction is  currently  or  potentially  feasible total potential earnings for your lifetime
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Reserve : that portion of a resource which is identified and from which usable  materials can be  legally  and  economically  extracted  currently portion of a resource “liquid assets” example: money in your pocket or bank account WATER most important resource required for food required for life used in production of products such as paper required for energy production more than any other resource, it sets the limits on economic and population  growth  Hydrologic Cycle     precipitation surface runoff infiltration subsurface groundwater flow
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Exam Two Notes - WaterResources 1:36:00PM Resources:...

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