In the spring, blossoms on cherry trees can be damaged when temperatures fall below -2°C. When the forecast calls for air temperatures to be below -5°C for a few hours one night, a farmer sprays his blossoming cherry trees with water, claiming that the blossoms will be protected by the water as it freezes. Which of the following is a correct scientific justification for spraying water on the blossoms to protect them from temperatures below -2°C?