Systems Frameworks and Application (AQA A-Level Geography): Flashcards
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Practise the cards
10 cards from this deck
System definition
System definition
Set of interrelated components working together as a process
Store/component
Store/component
Part where energy or mass is stored or transformed
Flow/transfer
Flow/transfer
Movement of energy or mass between stores/components
Isolated system
Isolated system
No input or output of energy or matter
Closed system
Closed system
Energy transfers allowed, but not matter
Open system
Open system
Both matter and energy can cross boundary
Dynamic equilibrium
Dynamic equilibrium
Balance between inputs and outputs, stores remain stable
Positive feedback
Positive feedback
Effects are amplified or multiplied by knock-on effects
Negative feedback
Negative feedback
Effects are nullified or dampened by knock-on effects
Cascading system
Cascading system
Output from one subsystem becomes input for another