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Exam I Study Guide

Exam I Study Guide - SOS 2007 Exam I Study Guide Know 1 The...

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SOS 2007 Exam I Study Guide Know: 1. The per capita water (gal. per person per day) use that is deemed “stressed” 126 gal/day per capita 2. How many tons of water are needed to grow one ton of grain? 1,000 tons of water 3. What activity (agriculture, power generation, etc.) withdraw the greatest % of water? Agriculture: with 80% 4. Average household water use annually 127,400 gallons 5. Average daily household water use 350 gallons 6. Percentage of water in living systems 70% 7. Amount of water loss leading to human fatality 12% of your body water 8. Two reasons water is an ideal medium for biochemical reactions. 1. Retains heat, moderates temperature 2. Excellent solvent 3. Transports nutrients, life compounds 4. Participates in reactions 9. Organ in the human body containing the greatest % of water. Brain with 85% 10. The mode by which we lose the greatest amount of water from our bodies. 65% is lost by excretion 10. Who was Thales of Meletus? “ the father of science” 11. Dates of big Bang, solar system, liquid water Big Bang: 14 billion years Solar System: 4.5 billion years Liquid Water: 3.6-4 billion years 12. Three possible sources of water. 1. Asteroids 2. Comets 3. Earth’s Mantle 13. The difference between deuterium and “ordinary water” How is this significant in terms of the origins of water on earth. Deuterium is found in comets like Halley’s and Hale –Bopp Deuterium has a neutron. The earth ratio of hydrogen to deuterium is about 4000:1 o the ratio for many comets (e.g. Halley’s and Hale-Bopp) is about half that suggesting they may not have delivered much water to earth. o Deuterium: Is a stable isotope of hydrogen with a mass approximately twice that of the usual isotope 14. The percentage of volcanic gases comprised by water. 70% 15. Three features that make Lucy special. Antiquity Completeness Rarity 16. Lucy’s approximate age. 3.2 million years old 17. Definition of a fossil and two functions of water in fossilization. Fossil: the remains of a dead organism preserved in rock 1. Burying in sediment or mud 2. Medium of necessary chemical reactions 3. Reducing environments 4. Dehydration 18. Two hypotheses proposed leading to the adaptation of walking upright. Be able to explain one.
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1. Postural Feeding Hypothesis 2. Turn-Over Pulse Hypothesis (Savannah Hypothesis) a. The theory is part of a general theory of human evolution known as the
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Exam I Study Guide - SOS 2007 Exam I Study Guide Know 1 The...

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