Answer: Stays the same.
- A Stays the same
- B Rises
- C Falls
- D Depends on ice density
Correct answer: A. Stays the same
Explanation: Floating ice displaces water equal to its weight. When ice melts, it produces exactly that same weight of water. The water level remains unchanged.
Since the same volume of fluid must pass every cross-section per second (continuity), the fluid speeds up where the pipe narrows; Bernoulli's equation then says this faster-moving fluid has lower pressure - the principle behind a venturi meter and an aircraft wing's lift.
Concept context
Pressure, buoyancy, Bernoulli equation, viscosity, and surface tension.