WONDER #103: Why Is Sand or Salt Put On Roads When It Snows?
Question 1 of 3
Salt does what to the freezing point of water?
Question 2 of 3
Putting sand on an icy road helps to improve what?
Question 3 of 3
Salt needs what to begin the melting process?
Check your answers online at https://www.wonderopolis.org/wonder/why-is-sand-or-salt-spread-on-the-road-when-it-snows.