Labels:bulletin board | car | clock | door | earth | perforation | road | sky | vase OCR: STRUCTURE Corona: extends out several million miles Atmosphere: approximately 2000 km thick Convective Zone 120 ,000 km thick Radiative Zone: 400, 000 km thick Core radius of 175 000 km Structure The thermonuclear reactions which power the Sun occur within the core the energy which is generated then must be transported to the surface In the innermost 80% of the Sun, the energy is transported by radiative diffusion. The energy is continually absorbed and re emitted by atoms in the radiative zone slowly making its way out to the surface. In the outer parts of the Sun however the energy is trans ported by convection In the convection zone, the mass move ement of the solar material takes the energy to the sur- face Most of the light which we see is radiated from the at- mosphere thin layer abo ...
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