As the Earth’s population increases the demand for potable water increases. Climate change could make finding water sources harder. The treatment needed to make the water safe depends upon the source.
What name is given to drinkable water?
What treatment method is not needed for groundwater?
What is the name of a large underground store of water?
Which of the following would be removed by screening?
A large piece of plastic
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