Before sunrise on a clear, calm, cold morning, frost can often be seen on the tops of parked cars, even when the air temperature is above freezing. Which of the following processes cools the tops of the cars and causes this condition?

Question

Quizplus · Accepted Answer

Radiation is the transfer of thermal energy through electromagnetic waves. In this case, the tops of the cars lose heat to the clear sky through radiation, causing them to cool and form frost even if the air temperature is above freezing.

Before Sunrise on a Clear, Calm, Cold Morning, Frost Can