WATER AND CARBON
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17 Terms
what is a model
a simplified version of a process
what is a system
A set of interrelated components working together towards some kind of process.
They are a series of stores or components that have flows or connections between them
what are the 3 types of property
Elements
Attributes
Relationships
what is a store/component
a part of the system where energy/mass is stored or transformed
what are flows/transfers/connections
a form of linkage between one store/component and another that involves movement of energy or mass
what is an element in a system
the things that make up the system of interest
what is an attribute in a system
the perceived characteristics of the elements
what are relationships in a system
how the various elements work together to carry out some sort of process
what is an isolated system
no interactions with anything outside the system boundary
No input or output of energy or matter
Many controlled lab experiments are this type of system- they are rare in nature
what is a closed system
have transfers of energy both into and beyond the system boundary, but not a transfer or matter
what is an open system
matter and energy can be transferred from the system across the boundary to the surrounding environment
Most ecosystems are an example of an open system
what is dynamic equilibrium
balance between inputs and outputs
what is positive feedback
the effects of an action are amplified or multiplies by subsequent knock on or secondary effects
what is negative feedback
effects of an action are nullified by its subsequent knock on effects
what common characteristics are shared by most systems
They have a structure which lies within a boundary.
They are generalisations of reality, removing incidental detail that obscures fundamental relationships.
They function by having inputs and outputs of material that is processed within the components causing it to change in some way
They involve the flow of material between components
give an example of a system
ecosystem- pond
what is feedback
if one element of the system changes, the stores change and the equilibrium is upset