A boat is floating in a small pond. The boat then sinks so that it is completely submerged. What happens to the level of the pond?
A) It increases.
B) It decreases.
C) It stays the same.
D) In some cases it would decrease, in others it would stay the same.
E) In some cases it would increase, in others it would stay the same.

Question

Quizplus · Accepted Answer

When the boat is floating, it displaces a volume of water equal to its weight. When it sinks, it displaces a volume of water equal to its own volume, which is less than the volume displaced when it was floating. Thus, the water level decreases.

A Boat Is Floating in a Small Pond