The Hydrosphere (Grade 10 NSC Matric Physical Sciences): Flashcards
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Practise the cards
10 cards from this deck
Two major threats to hydrosphere
Two major threats to hydrosphere
Pollution and overuse of water resources
Water pollution definition
Water pollution definition
Chemical substance present in harmful amounts
Eutrophication
Eutrophication
Excessive plant growth from fertiliser runoff
Toxic trace elements from mining/industry
Toxic trace elements from mining/industry
Aluminium, mercury, copper
SA water crisis predicted timeframe
SA water crisis predicted timeframe
2020-2040
Most sustainable water solution
Most sustainable water solution
Reduce demand, not increase supply
pH of neutral water
pH of neutral water
Water with pH <
Water with pH <
Acidic
Three water treatment methods
Three water treatment methods
Chlorination, filtration, flocculation
Clear water = pure water?
Clear water = pure water?
No, harmful substances can be invisible