Question

While on a vacation to North America, you saw a truck putting salt on a road after a heavy snowfall. As an inquirer, you want to conduct an inquiry to see the impact of salt on ice by measuring the amount of time taken by ice (with and without salt) to melt. You have read in a book that when salt is added to ice, it lowers the freezing point of the water, which means the ice on the ground can’t freeze that layer of water at 00C anymore. The water, however, can still melt the ice at that temperature, which results in less ice on the roads.



IDENTIFY INDEPENDENT, DEPENDENT AND CONTROLLED VARIABLE

Answer 1

Snow removal or snow clearing is the job of removing snow after a snowfall to make travel easier and safer. This is done by both individual households and by governments and institutions.