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Environmental Science 001: Lecture 1- Intro

by: Sadie Shelton

Environmental Science 001: Lecture 1- Intro ENSC 001

Marketplace > University of Vermont > Environmental Science > ENSC 001 > Environmental Science 001 Lecture 1 Intro
Sadie Shelton

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About this Document

These notes cover what happened in the first lecture
Intro Environmental Sci
Nicholas P. Perdrial
Class Notes
Science, ENSC 001, ENSC 1, ensc, environmental science, environmental, Lecture 1
25 ?




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This 3 page Class Notes was uploaded by Sadie Shelton on Thursday January 21, 2016. The Class Notes belongs to ENSC 001 at University of Vermont taught by Nicholas P. Perdrial in Spring 2016. Since its upload, it has received 25 views. For similar materials see Intro Environmental Sci in Environmental Science at University of Vermont.

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Date Created: 01/21/16
Thursday, January 21, 2016 Lecture 1 - Intro: What are Environmental Sciences? ENSC 001 Science (Latin) — scientia = knowledge Environment (French) — surroundings Environmental science definition key terms:
 • Physical • Human impact • Biological • Relationships • Chemical • Effects • Organisms • Problems • Analyze • Solutions
 Environmental science class definition Environmental science in a multidisciplinary science that studies complex interactions between all components on the earth system in order to solve the problems that it faces. 1. Multidisciplinary:
 • Physics • Sociology • Chemistry • Political Science • Biology • Anthropology
 • Economy - The sciences that constitute the field of environmental science are not intrinsically environmental - Branches (sub-fields) of these sciences are however considered environmental sciences when they deal with the environment • Environmental chemistry, Environmental policy, Environmental geology 1 Thursday, January 21, 2016 Why is multidisciplinary so important? Typically we learn about one topic for one given application and virtually nobody is able to think about and understand all feedbacks of a discovery and make a sensible decisions. You need more points of view in order to utilize all disciplines. More possibilities when different specialists work to gather and share ideas and knowledge. - In order to have complete, unbiased and efficient (in the sense of sustainable) way to solve environmental problems it is mandatory to: • Think of all aspects of the problem • Seek the necessary expertise to cover all the aspects • Build synergistic relationships between all people involved. 2. Earth System
 • Human sphere in the biosphere • Ecology • Systematic thinking • Anthropology
 Matter — anything that occupies space and has mass • All matter is composed of atoms - Atoms that cannot be broken down into smaller components are elements • 25 elements are essential for life: - Carbon, hydrogen, oxogen, nitrogen, phosphorous, and sulfer (CHONPS) are macronutrients - Carbon makes up 2/3 of the dry weight of an organism - Trace elements include magnesium, iodine, selenium - Toxic metals include lead, cadmium, aluminum, copper and zinc These elements combine to form molecules • • These molecules can interact with each other through reactions • No matter is ever created or destroyed during reactions: conservation of energy 2 Thursday, January 21, 2016 • On the early earth these reactions led to the synthesis of organic molecules (nucleotides) • These evolved to RNA and self-replicating molecules: life was born 3. Energy Different kinds of Energy • Electromagnetic or radiant energy is energy carried by light — electromagnetic spectrum • Mechanical energy — energy of matter in motion - Potential energy — energy of position - Kinetic energy — energy of motion • Chemical energy • Nuclear Energy • Electrical Energy Energy is the capacity to do work. • Work is a way of transferring energy to an object • To do work, energy must be converted from one form one form to another Energy and Power • Power is the rate at which work is done or the rate at which energy is used • Power = Quantity of work/Time to do work 3


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