The stream from a tap narrows as it falls because:

  1. the water evaporates
  2. surface tension makes it heavier
  3. gravity speeds the water up, so the area must shrink
  4. air pressure increases
Answer

C) gravity speeds the water up, so the area must shrink

Continuity. SLO P-11-B-37 · Understanding

Physics MCQ · More Fluid Statics and Dynamics MCQs · Practise