Welcome to the Quiz!
This quiz contains 10 questions from a mix of 1 subtopics.
What is potable water?
Water that can be places in pots
Water that is completely pure
Water that is not safe to drink
Water that is safe to drink
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What are the three criteria for water to be considered potable?
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Where does the UK get most of its potable water from?
Seawater
Fresh water sources
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Which of the following are usually sources of fresh water?
(Select all that apply)
Aquifers
Oceans
Seas
Rivers
Lakes
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Surface Water vs Ground Water
ocean / ground / aquifers / seas / rivers / air
- Surface water is water that is exposed to the . It includes lakes, , and reservoirs.
- Ground water is water that is found under the , such as in .
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What are the benefits of relying on fresh water?
(Select all that apply)
It is easy to access
It is replaced frequently
It can easily evaporate when it's sunny
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Three stages of treating fresh water
sterilise / ultraviolet / chlorine / filter / sand
- First, pass the water through a wire mesh. This will out any large objects like plastic bottles or leaves.
- Second, pass the water through a bed of and gravel. This will filter out smaller things like bits of rock.
- Lastly, the water to kill any microorganisms. There are three different ways to do this: 1) bubbling gas through it, 2) exposing it to ozone, 3) exposing it to radiation.
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What is desalination?
The extraction of pure water from fresh water
The extraction of potable water from sea water
The purification of potable water from waste water
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What is the main drawback of using desalination to get potable water?
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What are the two main techniques used in the process of desalination?
Dialysis
Fractional distillation
Reverse osmosis
Simple distillation
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