Of the three mechanisms of heat transfer, which is the only one that does not operate in the interior of Earth?

Question

Quizplus · Accepted Answer

Radiation requires the transfer of energy through electromatic waves and does not require a medium. Since Earth is a solid object and radiation requires energy transfer through empty space, it is the only heat transfer mechanism that does not operate in the interior of Earth. Convection and conduction can occur within Earth's interior because it is a fluid and a solid, respectively.

Of the Three Mechanisms of Heat Transfer, Which Is the Only