What name is given to drinkable water?
Groundwater
Surface water
Potable water
What treatment method is not needed for groundwater?
Aeration
Filtration
Chlorination
What is the name of a large underground store of water?
Cave
Aqueous
Aquifer
Which of the following would be removed by screening?
A large piece of plastic
Sand
A small piece of gravel
How are most of the solids separated from surface water?
They settle to the bottom of a tank
They float to the top and are skimmed off
They are removed by bacteria
Which method removes very small particles during surface water treatment?
What extra treatments are used to make wastewater safe to release into rivers?
Filtration and biological treatment
Filtration and extra chlorination
Aeration and biological treatment
What is the chemical test for chlorine?
Turns damp red litmus paper blue
Turns damp blue litmus paper white
Turns damp blue litmus paper green
Which location would benefit most from using seawater as a source of potable water?
A coastal town in a hot country with a freshwater supply
An inland town in a hot country with no freshwater supply
A coastal town in a hot country with no freshwater supply
Which two processes could take place during desalination?
Distillation or filtration
Distillation or membrane filtration
Evaporation or membrane filtration