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Environmental Studies, The Blue Planet, Chapter 1
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19
Environmental Studies
Undergraduate 2
12/01/2012

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Term
Box Model
Definition
A simple, convenient graphical representation of a system.
Term
Closed System
Definition
A system in which the boundery permits the exchange of energy but not matter.
Term
Earth System Science
Definition
The science that studies the whole planet as a system of parts and focuses on the changes within and amongst those parts.
Term
Flux
Definition
The rate at which energy or matter is transferred.
Term
GIS (Geographic Information Systems)
Definition
Computer-based software programs that allow massive amounts of spatially-referenced data points along with their characteristics.
Term
Isolated System
Definition
An impossible system in which the boundary prevents the exchange of energy or matter.
Term
Model
Definition
It's a model.
Term
Open System
Definition
A system that can exchange both energy and matter across its boundary.
Term
Remote Sensing
Definition
The continuous collection of info about a target from a distance.
Term
Reservoir
Definition
Places that a material collects and is stored over time.
Term
Residence Time
Definition
Time material spends in a reservoir.
Term
Sequestration
Definition
Whenever reservoirs are isolated from contact with the rest of the world for a long time.
Term
Sink
Definition
Not just where you wash your dishes. When the flux of a substance into a reservoir is greater than the flux out of it.
Term
Source
Definition
Opposite of Sink.
Term
Steady State
Definition
When the flux into and out of something are equal.
Term
System
Definition
A portion of the universe that can be isolated form the rest of the universe for the purpose of observing and measuring changes.
Term
Anthroposphere
Definition
The human sphere.
Term
Atmosphere
Definition
Nothing but air.
Term
Biogeochemical Cycle
Definition
The movement of chemical elements or compounds that cycles through the biosphere as well as through other earth reservoirs.
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