topic 10 - using resources (7. potable water)

Question 1

what is potable water

Answer 1

treated water

naturally safe water for humans to drink

Question 2

is potable water pure

Answer 2

no is can contain lots of other dissolved substances

Question 3

factors impacting how potable water is produced in a specific place

Answer 3

climate
landscape
cost

Question 4

what is fresh water

Answer 4

water that doesn’t have much dissolved in it

Question 5

water in the UK is mostly

Answer 5

fresh water

Question 6

how to treat fresh water

Answer 6

filteration - wire mesh removes large twigs and gravel

sterilization - kills any harmful bacteria or microbes

Question 7

what do some dry countries do to get water if fresh isn’t an option

Answer 7

treat sea water by desalination to provide potable water

Question 8

what methods can you use for the desalination of water

Answer 8

distillation or reverse osmosis

Question 9

what happens during reverse osmosis

Answer 9

salty water passed through a membrane that only allows water molecules to pass through

Question 10

why aren’t distillation or reverse osmosis commonly used

Answer 10

very expensive