Lesson 1 - Earth's System Frameworks: Flashcards
What is a System?
A system is a set of interrelated components which work together towards a process.
What are the three types of Property within a System?
1) Elements,
2) Attributes,
3) Relationships.
What is an Isolated System?
An isolated system has no interactions with anything outside the system boundary. There is no input or output of energy or matter.
What is an Open System?
An open system allows energy and matter to be transferred from the system across the boundary into the surrounding environment.
What is a Closed System?
A closed system allows the transfer of energy into and beyond the system boundary, but not matter.
What is a Flow / Transfer?
A form of linkage between one store / component and another that involves the movement of energy or mass.
What is an Input?
An input is the addition of matter and / or energy into a system.
What is an Output?
An output is the exit of matter and / or energy in a system.
What is Dynamic Equilibrium?
Dynamic equilibrium is where an open system has a balance between inputs and outputs.
What is Positive Feedback?
Positive feedback is when the dynamic equilibrium is disrupted and the effects of an action are amplified by subsequent secondary effects.
What is Negative Feedback?
Negative feedback is when the dynamic equilibrium is disrupted and the effects of an action are nullified by subsequent secondary effects.
What is a Cascading System?
A cascading system involves systems interacting with each other as part of a chain.
What are Elements?
The things that make up a system.
What are Attributes?
The perceived characteristics of the elements.
What are Relationships?
Descriptions of how the various elements work together to carry out processes.
