alleryIn hydrology, what does the residence time of a reservoir measure?
ADepth of the reservoir
BAverage stay of its water
CYearly rain it receives
DSpeed of its water flow
Answer & Solution
Correct answer: B. Average stay of its water
1. Residence time is the average time a water molecule spends in a reservoir.
2. It is a measure of the average age of the water there.
3. Depth, rainfall and flow speed are different quantities.
_Source: Wikipedia, Water cycle, Residence times_
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