Worksheet: Water Purification

In this worksheet, we will practice describing methods of water purification and explore their advantages, limitations, and common applications.

Q1:

Potable water must be sterilized before it can be drunk. Which of the following is not a common treatment agent in the production of potable water?

  • AChlorine
  • BOzone
  • CUltraviolet light
  • DCalcium carbonate

Q2:

Which of the following is not a source of fresh water?

  • AOceans
  • BAquifers
  • CLakes
  • DRivers
  • ERainwater

Q3:

When preparing potable water from freshwater sources, the water is first passed through a coarse screen. What is the purpose of this screen?

  • ATo help oxygen dissolve in the water
  • BTo neutralize acid in the water
  • CTo catalyze the breakdown of contaminants
  • DTo mix the water thoroughly
  • ETo removed large objects from the water

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