A city is having a problem with its sidewalks.

In the winter, small cracks in the concrete get bigger. Some students think that this might be caused by rainwater getting into the cracks.

In this task, you will investigate what happens to the volume of water when it freezes.

You will use the results of your investigations to predict and test what will happen when water freezes in the cracks of a concrete sidewalk.

Click "NEXT" to continue.