Which energy transfer from the Sun to the Earth?

Which energy transfer from the Sun to the Earth?

• A. Conduction
• B. Reflection
• C. Radiation
• D. Convection

Answer: (C)

Energy from the Sun reaches Earth through radiation, the transfer of energy by electromagnetic waves that can travel through the vacuum of space. This means sunlight can travel through empty space and warm the Earth when those waves are absorbed by the atmosphere, land, and oceans. Conduction needs direct contact with matter to transfer heat, which isn’t how solar energy moves across space. Convection involves the movement of fluids transferring heat, a process that requires a medium like air or water. Reflection is energy bouncing off a surface, not the primary way energy arrives from the Sun to Earth, though some sunlight is reflected back into space. Since the Sun’s energy travels through space without a medium, radiation is the correct explanation.

Energy from the Sun reaches Earth through radiation, the transfer of energy by electromagnetic waves that can travel through the vacuum of space. This means sunlight can travel through empty space and warm the Earth when those waves are absorbed by the atmosphere, land, and oceans.

Conduction needs direct contact with matter to transfer heat, which isn’t how solar energy moves across space. Convection involves the movement of fluids transferring heat, a process that requires a medium like air or water. Reflection is energy bouncing off a surface, not the primary way energy arrives from the Sun to Earth, though some sunlight is reflected back into space. Since the Sun’s energy travels through space without a medium, radiation is the correct explanation.