Types of system Flashcards
1
Q
Characteristics of an open system
A
Exchanges matter and energy, matter and energy are infinite, e.g. drainage basin
2
Q
Characteristics of an isolated system
A
Prevents exchange of energy and matter, energy/matter are finite and fixed, hypothetical - does not exist in real world
3
Q
Characteristics of a closed system
A
Exchanges energy NOT matter, matter is finite and fixed unlike energy, e.g. global water/carbon cycle
4
Q
What is positive feedback?
A
Where the effects of an action are amplified by changes to the inputs, outputs and processes.
5
Q
What is negative feedback?
A
Where the effects of an action are nullified by changes to the inputs, outputs and processes.
6
Q
What is Dynamic Equilibrium?
A
Outputs and inputs are balanced
