Revision: 1.2 Systems

8 flashcardsby Ley
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1
What is a model?
A simplified representation of reality
2
What is a system?
Any set of interacting or interdependent compononents organised to create a functional whole, and produces emergent properties
3
What is a storage in a system?
Areas where energy or matter are accumulated inside a system
4
What happens to a storage when inflows are greater than outflows?
The level of the storage increases
5
What does an open system exchange with its surroundings?
Both materials and energy
6
What is the difference between a transfer and a transformation?
Transfers move energy or matter from one place to another without changing it, transformations move energy and matter and do change their state or form
7
How do negative and positive feedback differ?
Negative feedback dampens effects and promotes return to stability in human body temperatures and predator-prey relationships meanwhile positive feedback amplifies changes and drive the system towards a tipping point
8
What is resilience in an ecosystem?
An ecosystem’s tendency to avoid tipping points and maintain stability
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