At which temperature would Earth be radiating energy at the greatest rate or intensity?
A)-5°F
B)-40°F
C)60°F
D)32°F
E)105°F

Question

At which temperature would Earth be radiating energy at the greatest rate or intensity?
A)-5°F
B)-40°F
C)​60°F
D)​32°F
E)​105°F

Quizplus · Accepted Answer

According to Wien's Law, the wavelength of radiation emitted by an object is inversely proportional to its temperature. As temperature increases, the peak wavelength shifts towards shorter, visible wavelengths. The peak of Earth's radiation spectrum is at a wavelength that corresponds to about 10 micrometers. At this wavelength, the maximum energy is emitted at a temperature of approximately 105°F (40.6°C). Therefore, E is the correct answer.

At Which Temperature Would Earth Be Radiating Energy at the Greatest