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NAT 388G Week One Class Notes

by: Samantha Bishop

NAT 388G Week One Class Notes NAT 388G

Marketplace > Lenoir-Rhyne University > Natural Sciences > NAT 388G > NAT 388G Week One Class Notes
Samantha Bishop

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About this Document

Scientific Method, Thermodynamics, Trophic Pyramid
Level II Natural World
Heidi Holder
Class Notes




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This 2 page Class Notes was uploaded by Samantha Bishop on Tuesday August 9, 2016. The Class Notes belongs to NAT 388G at Lenoir-Rhyne University taught by Heidi Holder in Fall 2016. Since its upload, it has received 28 views. For similar materials see Level II Natural World in Natural Sciences at Lenoir-Rhyne University.


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Date Created: 08/09/16
NAT 388G  Week One Class Notes  (8/23/16­8/25/16) The Scientific Method 1. Problem/Question 2. Background Research 3. Formulate Hypothesis ­ testable ­ specific 4. Experiment ­ test hypothesis 5. Analysis 6. Conclusion ­ true ­ partially true proves your hypothesis to be… ­ false …leads you to retest Thermodynamics First Law: energy is neither created nor destroyed; energy is conserved o Energy­ the ability to do work o Two Types: Kinetic and Potential o Kinetic­ energy that is doing work now  Motion  Heat  Waves o Potential­ stored energy  Chemical  Gravitational  Elastic  Electromagnetic  Second Law: at every transition, useful energy is lost o Heat never spontaneously flows from a cold body to a hot body o There is no such thing as a perfect engine efficiency < 100%   efficiency= work put out/work put in o Entropy always increases  ­ entropy: measures the disorder of the system  Food Web Sun       weeds   grubs        moles    dogs  rabbit  dog food hawk  Trophic Pyramid  Quaternary consumers (0.01%) HETEROTROPHS (­­) Tertiary consumers (0.1%) HETEROTROPHS (­­) Secondary consumers (1%) HETEROTROPHS (­­) Primary consumers (10%) HETEROTROPHS (rely on eating something to get energy) Producers (100%) AUTOTROPHS (get energy from Sun) *Most of the energy you consume goes to heat*


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