Water and Carbon Cycles as Natural Systems Flashcards Preview

Geography- Water and Carbon Cycles > Water and Carbon Cycles as Natural Systems > Flashcards

Flashcards in Water and Carbon Cycles as Natural Systems Deck (15):
1

Input

The addition of energy and / or matter into a system

2

Output

Matter / energy moving out of the system

3

Stores / Components

Parts of the system where energy / mass is stored or transformed

4

Flow / Transfer

Processes of movement within a system

5

Elements

Things that make up the system of interest

6

Attributes

Characteristics of the elements (i.e. hot, cold)

7

Relationships

How various elements (and their attributes) work together to carry out some kind of process

8

Positive Feedback

Where the effects of an action are amplified or multiplied by subsequent knock-on or secondary effects

9

Negative Feedback

Where the effects of an action are nullified by its subsequent knock-on effects

10

Dynamic Equilibrium

Dynamic Equilibrium- Inputs and outputs of energy and matter balance

11

System

A set of interrelated components working together towards some kind of process

12

Isolated Systems

No interactions with anything outside the system boundary, there is no input or output of energy or matter i.e. the Universe, lab experiments

13

Closed Systems

Have transfers of energy both into and beyond the system boundary but not transfer of matter i.e. Earth

14

Open Systems

Where energy and matter can be transferred from the system across the boundary into the surrounding environment i.e. ecosystems

15

When do positive and negative feedbacks occur?

When dynamic equilibrium is upset