Water properties
Evaporation/Rainfall
Groundwater
River basin hydrology
Fluvial geomorphology
100
70%
What is the percentage of water in our body?
100
It contributes about 36-72% of the greenhouse effect
What is the contribution of water vapour to the greenhouse effect?
100
200 to 10,000 years
What is the residence time of groundwater?
100
All land area from which water flowing by gravity on the surface would pass through a given cross-section of a stream channel
What is a watershed?
100
It is the lowest elevation to which a stream can erode its channel
What is a river base level?
200
Comets
What is the main origin of the water on our planet?
200
It is the process of water movement through plants and its evaporation from aerial parts such as leaves
What is transpiration?
200
impermeable layers that hinder or prevent water movement
What is an aquitard?
200
Digital Elevation model
How do you define a watershed?
200
The Amazon basin
Which is the largest basin in the world?
300
It is the ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity
What is the capillarity action?
300
Vapor pressure gradient and wind turbolence
What important factors do you need in order for evaporation to occur?
300
Igneous and metamorphic rocks
Which kind of rocks are bad for aquifer formation?
300
it is the ratio between the cumulated length of the river and the catchment area
What is drainage density?
300
It was 100 m lower than today
How much lower was the sea level during the ice age compared to today?
400
-80C
What would be the boiling temperature of water if the molecule did not have covalent bonds?
400
Fall rate and droplet surface area
What are the droplet factors to take into consideration when we talk about drag force/updraft?
400
It is the breakdown of contaminants by microorganism
What is bioremediation?
400
In South America is about 685 mm
What is the continent with the highest runoff?
400
They range in size from depths of 0.5 m up to 25m
What are the usual depths of Gullies?
500
It requires 6 times more energy
How much more energy does it take to evaporate water from liquid to gas compared to raise temperature from 0 to 100C?
500
0.5 mm
What is the minimum water drop diameter necessary for the drop to fall?
500
The coastal aquifers under very low hydraulic gradients, such as the Asian mega-deltas
Which aquifers in the world are more sensitive to salt water intrusion?
500
It gradually decreases from June to December where it plateaus until spring
How does the nival hydrological regime of a river look like?
500
It is the distance measured between 2 points along the stream divided by the straight line distance between 2 points
What is the sinuosity ratio?
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