THE SUN. CLASSIFICATION OF THE SUN Class G Color Yellow Surface Temperature 5,000 – 6,000 ºC Elements hydrogen and helium Greek word for Sun is Helios.

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Presentation transcript:

THE SUN

CLASSIFICATION OF THE SUN Class G Color Yellow Surface Temperature 5,000 – 6,000 ºC Elements hydrogen and helium Greek word for Sun is Helios

STRUCTURE OF THE SUN Atmosphere Corona Chromosphere Photosphere Interior Convective Zone Radiative zone Core

CORONA Sun’s outer atmosphere Can extend outward 10 – 12 times distance of the suns diameter Gases only visible during total solar eclipse 1,699, Celcius

CHROMOSPHERE 3,000 km thick Deep red in color Only seen during solar eclipse Element Helium was detected here in , Celcius

PHOTOSPHERE Visible portion we see Gases thick to represent what we see as surface 600 km thick Celcius

CONVECTIVE ZONE 200,000 km thick Gases circulate in convection currents YouTube - Solar Convection Currents

RADIATIVE ZONE Dense region 300,000 km thick Takes light millions of years to pass through Atoms are densely packed

CORE Center of Sun Nuclear Fusion takes place here Radius of core = 200,000 km Temperature = 15,000,000

ENERGY PRODUCTION IN THE SUN Initial belief = Burning How can it burn for billions of years? Second thought = Shrinking Gravity causes sun to shrink releasing energy E=MC² Energy equals mass times the speed of light squared Nuclear fusion= process of two nuclei combining

NUCLEAR FUSION

FEATURES ON THE SUN Sunspots Prominence Solar flares Solar winds

SOLAR PROMINENCE

SOLAR FLARE

SUNSPOTS

SOLAR WINDS

AURORA BOREALIS

SIZE OF OUR STAR YouTube - Planets and stars size in scale

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