3.1.1.1 Water and carbon cycles as natural systems Flashcards
1
Q
Define a system
A
A set of interrelated events or components working together
2
Q
Define dynamic equilibrium
A
Where there is a balance between inputs and outputs
3
Q
What is the difference between an open and closed system
A
Matter does not transfer out of a closed system but energy can
4
Q
Define negative feedback
A
A feedback which keeps a system in its original condition
5
Q
Example of negative feedback
A
- increase in CO2
- increase in temperature
- increased plant growth
- increased intake of CO2
- counteracts the change
6
Q
Define positive feedback
A
A feedback where there is progressively greater change from the original condition
7
Q
Example of positive feedback
A
- increase in ocean temperature
- dissolved CO2 is released from oceans
- increase in CO2
- further increase in temperatures
