natural hydrological cycle Flashcards
1
Q
how is the natural hydrological cycle a dynamic equilibrium
A
the amount of water that enters a store is the same as the amount which leaves
2
Q
what is the residence time
A
the amount of time water stays in a certain store before moving between another one
3
Q
what percentage of water is in the ocean
A
97%
4
Q
what percentage of water is in land ice
A
2%
5
Q
what percentage of water is in ground water
A
0.7%
6
Q
what percentage of water is in lakes and rivers
A
0.01%
7
Q
what percentage of water is in the atmosphere
A
0.001%
8
Q
what percentage of water is in living organisms
A
0.00004%
9
Q
how can residence time be worked out
A
volume of water in/mean transfer rate
