Water and Carbon cycles simplified (3.1.1.1 w/c as natural systems) Flashcards
1
Q
what is a system?
A
set of interrelated events or components working together
2
Q
what does a system consist of?
A
inputs, stores and outputs
witha. series of flows or connections between them
3
Q
what are the 4 types of systems?
A
isolated
closed
open
subsystem
4
Q
what is an isolated system?
A
no input/output of energy or matter
5
Q
what is a closed system?
A
no transfer of matter
6
Q
what is an open system?
A
inputs and outputs
7
Q
what is a subsystem?
A
components of a larger system
8
Q
what is dynamic equilibrium?
A
balance between inputs and outputs
9
Q
what are the 5 subsystems of the earth?
A
- atmosphere (air)
- cryosphere (frozen water)
- lithosphere (rock shell of earths surface)
- biosphere (living organisms)
- hydrosphere (water)
10
Q
what is positive feedback?
A
takes system away from dynamic equlibrium
11
Q
what is negative feedback?
A
keeps system at dynamic equilibrium
