Global Reserves & Potable Water (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What is potable water?
What is potable water?
Water safe for humans to drink
What must potable water NOT contain too much of?
What must potable water NOT contain too much of?
Dissolved salts and microbes
What do countries with little fresh water use to make potable water?
What do countries with little fresh water use to make potable water?
Salty seawater
Where is fresh water collected from?
Where is fresh water collected from?
Rivers, lakes, or underground
What materials are in a filter bed for water treatment?
What materials are in a filter bed for water treatment?
Sand and pebbles
What three methods are used to sterilise water?
What three methods are used to sterilise water?
Chlorine, ozone, and UV light
What is the purpose of sterilisation in water treatment?
What is the purpose of sterilisation in water treatment?
To kill harmful microbes
What does desalination remove from seawater?
What does desalination remove from seawater?
Sodium chloride (salt)
What are the two main desalination methods?
What are the two main desalination methods?
Distillation and reverse osmosis
Why is desalination expensive?
Why is desalination expensive?
It requires lots of energy
What happens during anaerobic digestion in sewage treatment?
What happens during anaerobic digestion in sewage treatment?
Microbes break down organics without air
What is produced during aerobic biological treatment of sewage?
What is produced during aerobic biological treatment of sewage?
Clean effluent