systems Flashcards
1
Q
what is a system?
A
set of interrelated components working towards a process
2
Q
what does a system consist of?
A
stores, flows, inputs and outputs
3
Q
what is a closed system?
A
transfer of energy and not matter
4
Q
what is an open system?
A
transfer of both energy and matter
5
Q
what is an isolated system?
A
no interactions outside the boundary
6
Q
what is dynamic equilibrium?
A
balance between inputs and outputs
7
Q
what is positive feedback?
A
effects are amplified
8
Q
example of positive feedback?(global warming)
A
- global temp rise
- global ocean rise
- dissolved co2 in oceans released
- more co2 in atmosphere
9
Q
what is negative feedback?
A
effects are nullified
10
Q
example of negative feedback?
A
- increase in fossil fuels
- increase of co2 in atmosphere
- more plant growth (plants consume co2)
- reduces co2 in atmosphere
11
Q
what is a cascading system?
A
open systems forming a chain
