A piece of iron sinks to the bottom of a lake where the pressure is 21 atm. Which statement best describes what happens to the density of that piece of iron?
A) There has been no change in the density of the iron.
B) Its density increases slightly.
C) Its density decreases slightly.
D) Its density becomes 21 times greater.

Question

Quizplus · Accepted Answer

The density of the iron increases slightly because the pressure at the bottom of the lake compresses the iron, reducing its volume slightly while its mass remains constant.

A Piece of Iron Sinks to the Bottom of a Lake