Water Lesson 1: Hydrological Cycle Flashcards
Define store
Reservoirs where water is stored
Define fluxes
These are how water is transferred between stores
Define processes
Physical mechanisms which drive the fluxes of water between the stores
Define cryosphere
Areas of Earth where water is frozen into snow/ice. During the last ice age sea levels were 140m lower than they are today
Define systems approach
These study hydrological phenomena by looking at the balance of inputs and outputs, and how water is moved between stores and flows
Define open system
Receives inputs from and transfers outputs of energy to other systems. For example a drainage basin
Define closed system
There is a fixed amount of water on the Earth and atmosphere system (1385 million km³). There are no external inputs or outputs - the amount of water is constant
Define blue water
Water is stored in rivers, streams, lakes and groundwater in liquid form
Define green water
Water stored in the soil and vegetation
% of water in oceans?
96.5%
% of freshwater?
2.5%
Ocean evaporation per year?
413 x10^3 km3
Ocean precipitation per year?
373 x10^3 km3
Volume of water in oceans?
1 335 040 x10^3 km3
Time of water in oceans?
3600 years
Volume of water in cryosphere?
26 350 x10^3 km3
Time of water in crypsphere?
15 000 years
Volume of water in cryosphere?
15 300 x10^3 km3
