What is the correct order of the Sun's main layers from the center outward?

What is the correct order of the Sun's main layers from the center outward?

• A. Core, radiative zone, convective zone, photosphere, chromosphere, corona.
• B. Core, convective zone, radiative zone, photosphere, chromosphere, corona.
• C. Core, radiative zone, photosphere, convective zone, chromosphere, corona.
• D. Core, photosphere, radiative zone, convective zone, chromosphere, corona.

Answer: (A)

Energy is produced in the Sun’s core and moves outward through successive layers that reflect how the Sun transports that energy. In the radiative zone, energy travels mainly by photons diffusing outward. As you move outward, conditions change and radiative transport becomes less efficient, so energy transfer shifts to convection in the outer convective zone, where hot plasma rises and cooler material sinks in a continuous churning motion. Once past these interior transport zones, the light we see emerges at the photosphere, the visible surface of the Sun. Above that lie the Sun’s atmosphere: the chromosphere and the outer, much more extended corona. This order—core, radiative zone, convective zone, photosphere, chromosphere, corona—reflects both where energy is produced and how it is carried to the surface and beyond.

Energy is produced in the Sun’s core and moves outward through successive layers that reflect how the Sun transports that energy. In the radiative zone, energy travels mainly by photons diffusing outward. As you move outward, conditions change and radiative transport becomes less efficient, so energy transfer shifts to convection in the outer convective zone, where hot plasma rises and cooler material sinks in a continuous churning motion. Once past these interior transport zones, the light we see emerges at the photosphere, the visible surface of the Sun. Above that lie the Sun’s atmosphere: the chromosphere and the outer, much more extended corona. This order—core, radiative zone, convective zone, photosphere, chromosphere, corona—reflects both where energy is produced and how it is carried to the surface and beyond.