It creates a nonslippery barrier between a car or person and an icy surface. Walking or driving on sand-covered ice provides the necessary friction. Salt applied to an icy surface can melt the ice, but it may also damage nearby plants. Sand does not melt ice, but it does provide increased friction on an icy surface without harming nearby plants. This is why sand is often used instead of salt where damage to plants is a concern.
Ice Is . . .
For kids ages 4 to 8. Ice is cold, slippery, pretty, and a lot of fun for children. Potter, Jean and K. Whelan Dery. 1993. For kids ages 4 to 8. Young readers discover science through art activities.