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C4 - PURIFYING AND TESTING WATER

charlotteeedx 7 questions

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Questions in this quiz (7)

  1. 1Water from a river is always okay to drink
    1. ATrue
    2. BFalse
  2. 2To turn it into the clean water in taps it is...
    1. Apassed through a water purification works
    2. Bcleaned
    3. Cpurified
    4. Dbottled
  3. 3Some [blank_start]pollutants[blank_end], such as [blank_start]nitrates[blank_end] from [blank_start]fertilisers[blank_end] and [blank_start]pesticides[blank_end] from crop spraying, get into the water before [blank_start]purification[blank_end], and some, such as [blank_start]lead[blank_end] from old water pipes, get in after treatment.
    1. Apollutants
    2. Bnitrates
    3. Cfertilisers
    4. Dpesticides
    5. Epurification
    6. Flead
  4. 4There are 3 main stages in water purification:
    1- [blank_start]SEDIMENTATION[blank_end] = chemicals are added to make [blank_start]solid particles[blank_end] and bacteria settle out
    2- [blank_start]FILTRATION[blank_end] = of very [blank_start]fine particles[blank_end] - a layer of sand on gravel [blank_start]filters out[blank_end] the remaining fine particles; some types of [blank_start]sand filter[blank_end] also remove microbes.
    3- [blank_start]CHLORINATION[blank_end] = chlorine is added to [blank_start]kill[blank_end] microbes.
    1. ASEDIMENTATION
    2. BFILTRATION
    3. CCHLORINATION
    4. Dkill
    5. Esolid particles
    6. Ffine particles
    7. Gfilters out
    8. Hsand filter
  5. 5Because these steps cost money , water must be conserved. Tick the 3 that are correct.
    1. AWater is a renewable source.
    2. BWater is a renewable source. If there is no rain in the winter, reservoirs can't fill up.
    3. CIn the UK more homes are being knocked down meaning less water that needs to be made
    4. DIn the UK more homes are being built so there is a higher demand for water
    5. EIt takes up energy and time to perform water purification
    6. FIt takes energy to pump and purify so this means global warming is increased.
  6. 6A* STUFF CHOOSE TRUE
    1. ATrue
    2. BFalse
  7. 7Some substances such as nitrates and pesticides have to go through an extra process to remove them why?
    1. AThey are soluble and are dissolved in the water.
    2. Bthey are so annoying
    3. Cthey keep moving so the purification doesn't get rid of them
    4. Dthe pesticides are too mixed in

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water purification
Language
English
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