Natural Systems Flashcards
1
Q
What is the definition of inputs
A
When matter or energy is added to the system
2
Q
What is the definition of stores
A
Where matter or energy builds up
3
Q
Definition of flows
A
Where matter or energy moves from one store to another
4
Q
What does positive feedback mean
A
Positive feedback is where the dynamic equilibrium of the system is pushed forward and in a cycle of increasing
5
Q
What does negative feedback mean
A
Negative feedback is where different components counteract the change is inputs or outputs
The system responds by keeping the system closer to its previous state
CO2 is emitted in atmosphere - extra co2 causes plant growth - plants remove CO2 - co2 is atmosphere decreases
6
Q
A
7
Q
What is the 5 subsystems of earth
A
Hydrosphere
Biosphere
Cryosphere
Atmosphere
Lithosphere
