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Our Special Star the Sun Convective Zone - 2 million degrees C˚ - thick shell wrapped around the radiation zone - heat energy is carried to the surface in circular convection currents Core - 15 million degrees C˚ - center of the sun - nuclear fusion occurs (H+H+H+H) = (He) and (energy) Radiation Zone - wrapped around the core - extremely dense - 100,000 year energy transfer Photosphere: 6,000 degrees C innermost layer of the Suns atmosphere Suns visible surface Chromosphere 27,800 degrees C middle layer of atmosphere origin of solar storms Corona 1.7 million degrees C outermost layer of the Sun particles greatly spaced Prominences huge bright arches of hot gas can extend thousands of kilometer out from the sun originate in the Chromosphere Solar Flares bright bursts of light on the Suns surface temperatures reaching twice that of the surface lasts only several hours Solar Wind stream of high energy particles released from the sun interaction with Earths electromagnetic field causes Northern Lights/Aurora • interferes with radio communication Sunspots storms in lower atmosphere dark areas on the suns surface cooler then the rest of the suns surface