Introduction to Environmental Science

 Human population growth rate is at 1.2%  Human pop. Peaked at 2.1% in 1965-1970 with rapid improvement of healthcare and food production.  Stages of pop. Growth  Stage 1  Early period of hunter and gatherers  Stage 2  Rise of agriculture  Stage 3  Industrial revolution  Stage 4  Currently, allowed for population density & increase in human pop.  Doubli

EVR | 1001 | Introduction to Environmental Science |  Human population growth rate

 What is energy  Energy can neither be created nor destroyed  First law of thermodynamics (law of conservation)  Energy can be converted form one form to another  Kinetic energy (energy of motion  Potential energy  Positional energy  Energy in chemical bonds  Energy in electromagnetic radiation (light)  Energy in matter itself  Second law of thermod

EVR | 1001 | Introduction to Environmental Science |  What is energy  Energy can 

 Bio-geo-chemical cycles  Biochemical cycles are pathways for transport and transformation of matter within four areas that comprise the earth:  Biosphere – the living earth  Lithosphere – the solid  Hydrosphere – liquid earth  Atmosphere – gaseous earth  Biogeo chemical cycles are the reason for the difference  Element – fundamental type of matter

EVR | 1001 | Introduction to Environmental Science |  Bio-geo-chemical cycles  Bi

 Scientific understanding of life and its environment is based on scientific method.  Scientific method is a process:  Way of knowing  Results in conclusions, generalizations & sometimes scientific laws  Allows to explain a phenomenon  Continuous process  Sometimes a science undergoes a fundamental revolution in ideas  Which of the following is th

EVR | 1001 | Introduction to Environmental Science |  Scientific understanding of 

Biochemical Cycles  The Rock Cycle  Consist of numerous process that produce rocks and soils  Depends on the tectonic cycle for energy and the hydrologic cycle for water  Rocks classified as:  Igneous: formed through cooling and solid of magma or lava  Sedimentary: formed by sediment that is deposited over time and compressed – layers of rock  Metamorph

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