Roads freeze quickly when they are: A – flat B – curvy C – in the sun D – shaded

Question: Roads freeze quickly when they are:

A – flat

B – curvy

C – in the sun

D – shaded

Answer: shaded.

Roads of shaded areas, as compared to sunny ones, are more prone to freezing more quickly. Consequently, the heat generated by the sun avoids precipitation of ice on the road surface. In case any ice has formed on the asphalt, the sun melts it instead. Unlike the unshaded road that does not retain the sunlight in the road surface, the shaded road gets colder faster due to the lack of sun exposure. This makes the area without sunlight to gather frosta, ice and snow rapidly and sunny roads to melt their surfaces faster. Absence of the sun involves no heat to struggle against a bitter cold wind thus the air is too cold for water to stay in the liquid state. Generally, the warm rays assist to prevent roads for a longer time from shutting while the shaded roads which are exposed to a cooler environment can be quicker to transition into an icy state.