Module 2
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A network of interdependent component and processes with materials and energy flowing from one component to another
System
those that receive inputs from their surroundings and produce outputs that leave the system
Open System
no matter exchanges with the surroundings
Closed System
increase a process or component
Positive Feedback
decrease a process or component
Negative Feedback
Feedback loops helps _____
stabilize systems
DISTURBANCES
Fire Flooding Climate Change Invasion of New Species Destructive Human Activities
properties that are entirely unexpected and include emergent phenomena in materials and emergent behavior in living creatures.
Emergent Properties
is the ability to return to a previous condition from being in a disturbance
RESILIENCE
adapt to the current condition, not going back to the previous condition
State Shift
A relatively stable state that keeps population sizes within a sustainable range
Equilibrium
substances that cannot be broken down into simpler forms by ordinary chemical reactions.
Element
the smallest particles that exhibit the characteristics of an element.
Atom
anything that occupies space and has mass
Matter
Principle of Conservation of Matter
matter is neither CREATED NOR DESTROYED but rather is recycled OVER AND OVER AGAIN
% Composition by Mass of H U M A N B O D Y
O C H N Ca P K
% Composition by Mass of O C E A N WAT E R
O H Cl Na Mg S Ca
% Composition by Mass of E A R T H ’ S C R U S T
O Si Al Fe Ca Na K
% Composition by Mass of AT M O S P H E R E
O N Ar Ca Ne He H
ability to do work
Energy
stored energy that is available for use
Potential Energy
the energy contained in moving objects
Kinetic Energy
Examples of Potential Energy:
Battery Food we eat Fuel
Examples of Kinetic Energy:
Riding Bicycle Wind Mill Dam