Multiple choice

A sheet of ice would float on a freshwater lake because ice

  1. is more dense than water.

  2. has less volume.

  3. is less dense than water.

  4. has less mass.

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ice floats on liquid water because it is less dense than the liquid form. When water freezes, its molecules form a crystalline structure that spaces them further apart, increasing the volume and lowering the density.