State and explain3 marksBGCSE
State two practical measures a settlement can take to reduce the spread of a water-borne disease such as cholera, and explain how each measure works.
Show the mark scheme and the examiner note
Answer: Boil or treat the drinking water (kills the bacteria); wash hands with soap (removes bacteria from hands before food is handled); separate the washing area from the drinking point (removes the source of contamination).
- Measure one with mechanism, e.g. boiling kills bacteria
- Measure two with mechanism, e.g. soap physically removes bacteria
- Both must be specific — "be careful" is not a measure
Examiner technique: The instruction "and explain how each works" means two marks per point: one for the measure, one for the mechanism. Two measures with no mechanism earns half.