Question

______: heat transfer from sun across 93 million miles of space and through earth’s atmosphere to the surface

Explanation:

Step1: Recall heat transfer methods

Heat transfer occurs via conduction, convection, and radiation.

Step2: Analyze the scenario

Conduction needs direct contact (not here as space is mostly vacuum). Convection requires a fluid medium (space isn't a fluid for this long - distance transfer). Radiation can travel through vacuum.

Answer:

Radiation