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Section 2

Section 2. The sun. The sun’s layers. The Sun is a huge ball of gas that makes energy by fusing hydrogen into helium Photosphere-often called the surface of the sun. Temp is about 6000K Above photosphere is the chromosphere

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Section 2

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  1. Section 2 The sun

  2. The sun’s layers • The Sun is a huge ball of gas that makes energy by fusing hydrogen into helium • Photosphere-often called the surface of the sun. Temp is about 6000K • Above photosphere is the chromosphere • Corona is outermost layer. Largest layer, temps are as high as 2 million K

  3. Surface features • Sunspots – appear dark because they are cooler than other areas • Sunspots prove that the sun rotates • Sunspots are not permanent features

  4. Prominences and flares • Prominences are huge, arching columns of gas that can blast materials into space • Solar flares come from sun spots that shoot outward suddenly

  5. The Sun-an average star • Our sun is middle aged • Many stars orbit each other in a binary or triple star system. Our system has only one star • Some stars move through space as a cluster of stars

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