ESS 4.1-4.2

Global conveyor belt

________: driven by differences in water density.

Desalination

________: makes freshwater from saltwater.

Reservoirs

________: used to collect /store water → built by damming rivers & flooding valleys.

Transformation

________: change in state.

Vegetation

________ (plants): can slow movement of water.

Percolation

________: water flows into the ground, under influence of gravity.

Water stress

________: when demand exceeds availablity.

most water on earth is

saltwater

Transformation

change in state

transfer

chnage in location

vegetation (plants)

can slow movement of water

percolation

water flows into the ground, under influence of gravity

aquifer

underground zone

groundwater

largest freshwater source

Global conveyor belt

driven by differences in water density

water stress

when demand exceeds availablity

reservoirs

used to collect/store water → built by damming rivers & flooding valleys

Desalination

makes freshwater from saltwater