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 (11):
1

Attributes

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

2

Relationships

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

3

System

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

4

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

5

Closed Systems

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

6

Open Systems

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

7

When do positive and negative feedbacks occur?

When dynamic equilibrium is upset

8

Positive Feedback in Water Cycle

Temp increases
Ice coverage decreases
Less ice = less Sun's energy reflected
More sun's energy absorbed by earth
Temp increases

9

Positive Feedback in Carbon Cycle

Temp increases
Warmer oceans
Less CO2 dissolved in oceans
Increased CO2 in atmosphere
Temp increases

10

Negative Feedback in Carbon Cycle

Increased fossil fuel- increased CO2
Increased temp
More plants
Increased CO2 uptake- less in atmosphere
Less CO2, temp decreases

11

Negative Feedback in Water Cycle

Temp increases
Increased evaporation from oceans
More clouds
Reflect more of sun's energy back to space
Temp decreases