1.2 systems and models Flashcards
1
Q
components of a system
A
- inputs
- processes
- outputs
2
Q
system inputs
A
- elements that go into a system
- flows
3
Q
system processes
A
- acts on the inputs and transforms them into outputs
4
Q
system outputs
A
- flows of matter and energy that leave the system
- ie heat, waste
5
Q
open system
A
- exchanges matter and energy with its surroundings
6
Q
closed system
A
- exchanges energy but not matter with its surroundings
- all major global systems are closed, nitrogen, carbon, hydrological
7
Q
isolated system
A
- exchanges neither energy or matter with it’s surroundings
- ie the universe
8
Q
biosphere 1
A
- self regulating, closed system
- includes all living organisms and dead organic matter from living organisms
- as earth evolved, organisms changed atmosphere to maintain conditions necessary for life to continue (gaia hypothesis)
9
Q
biosphere 2
A
- ecological experiment
- attempt to mirror conditions on earth and create a fully closed system
- completely sealed, everything recycled within the system
10
Q
the carbon cycle
A
add image here system diagram carbon cycle
11
Q
transfers
A
- move energy/matter from one place to another without changing it
12
Q
transformations
A
- move energy and matter and in the process change it’s state/form
13
Q
advantages of models
A
- can show complex systems clearly
- see patterns
14
Q
disadvantages of models
A
- lack detail, can cause misunderstanding, misleading
- impossible to account for all factors
