GEO- EXAM 1 REVIEW

GEO- EXAM 1 REVIEW - Geology Review: 1. Objectives of...

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Geology Review: 1. Objectives of course: a. The nature and distribution of geological resources b. The importance of resources in society c. Environmental impacts of resource use 2. Resource : natural concentration; has potential for economic extraction. a. Enhances quality of human life b. Source of wealth or revenue, anything used to help one earn a living c. An available means - A reserve is part of a resource that is economically, legally, and technologically extractable. (ALWAYS less than resource) - Resource base is the total amount of the resource in the crust of the earth. 3. ?? 4. Renewable resources : replaced by natural processes at a rate comparable or faster than its rate of consumption by humans. a. Solar, wind, biomass, geothermal, water, timber, fish Non-renewable resources : cannot be produced, re-grown, regenerated or reused which is comparable at consumption rate. Has a fixed quantity. b. Coal, petroleum, natural gas 5. Availability of resources?? a. Technology advances- improvement can change resource into reserve b. Geologic Information- can be used to find new resources c. Controls availability of resources: c.i. Industrial needs c.ii. Population expansion ( exponential growth ) c.iii. Climate c.iv. Technology c.v. Science c.vi. Politics c.vii. World situation c.viii. Wars c.ix. Local interest 6. ?? 7. Population in the world is NOT homogeneous. a. Population drives resource demand. a.i. But rate of resource use can be faster than population increase. a.ii. Pessimistic = population grows faster than resource availability b. Environmental impact=population x affluence and consumption x tech c. Examine population growth through calculation of natural increase c.i. Births-deaths c.ii. Current increase in the world is 1.3% per year
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c.iii. World population expected to double in the next 150 years c.iii.1. Less developed countries increase more. c.iv. Profiles are used to describe relative growth and age structure of a population. c.iv.1. Describes distribution based on sex and age. c.iv.2. Many developing countries have a pyramid shape. c.v. Fertility rate = number of children women have c.vi. When population shrinks means it is also aging. c.vii. Population Growth Rate = percentage change of resident population compared to previous year. c.vii.1. NOT THE SAME AS POPULATION GROWTH c.viii. Largest population increase will take place in India. 8. Population is distributed based on natural increase/decrease or migration a. Over population can lead to environmental problems a.i. Pollution a.ii. Global warming a.iii. Habitat destruction a.iv. Waste management b. Growth leads to faster depletion of resources b.i. TOO much TOO fast b.ii. Increased energy and use of water, forest, soil, etc b.iii. Increase urbanization b.iv. Stress on ecosystems c. DEVELOPED vs. DEVELOPING countries affects resources c.i. Developed puts large strain on resources. c.ii.
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This note was uploaded on 12/20/2011 for the course GEOS 1024 taught by Professor Meschreiber during the Spring '08 term at Virginia Tech.

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GEO- EXAM 1 REVIEW - Geology Review: 1. Objectives of...

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