For example, water actually expands when it freezes, becoming less dense.

When frozen, the water expands and can cause the cement to burst apart.

Ultimately, I found nothing specific on why water expands when it freezes.

In winter, water entering into the cracks will freeze and expand them even more.

Instead, the water expands, in the process pushing the piston inside the cylinder.

At minus 196 degrees Celsius, water will expand by roughly ten percent.

The water will then expand to more than 1700 times in volume, as compared to its liquid state.

Since the water can't expand inside this stainless steel pipe, what happens?

During the winter months, the water in the ground freezes and expands.

This is partly because water expands when it gets warmer.