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Layers of the Sun: Photosphere, Chromosphere, and Corona

Explore the three main layers of the Sun's atmosphere - the photosphere, chromosphere, and corona. Learn about their temperatures, appearances, and other features like solar winds, sunspots, solar flares, and nuclear fusion.

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Layers of the Sun: Photosphere, Chromosphere, and Corona

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  1. The Sun Our Main Star

  2. Layers of the Sun • There are 3 main Layers to the Sun’s atmosphere: • Photosphere • Chromosphere • Corona

  3. Photosphere • The lowest layer of the Sun’s Atmosphere • The visible surface of the Sun • Where most of the light is emitted (given off) • Temperature about 5800 K or 9980 F

  4. Chromosphere • The next layer up above the photosphere • 2500 Km thick • Temperature 30,000 K or 53,540 F • Usually only visible during a solar eclipse, the photosphere needs to be blocked • Appears red

  5. Chromosphere

  6. Corona “Crown” • The top layer of the Sun’s atmosphere • Several million kilometers thick • Temperature is between 1 million and 2 million degrees Kelvin • Made of gas, so it is very dim

  7. Corona

  8. Other Features of the Sun • Solar Winds- Gas that flow off of the corona

  9. Sunspots • Areas that appear on the photosphere. • Look darker because they are cooler

  10. Solar Flares • Violent eruptions of particles and radiation from the Sun’s surface

  11. Prominence • Arc of gas ejected from the chromosphere

  12. Sun & Nuclear Fusion Notes • The Sun is a typical star. 1. The Sun is about 75% hydrogen and 25% helium.

  13. Sun & Nuclear Fusion Notes • In nuclear fusion, small atoms combine into larger atoms, releasing huge amounts of energy.

  14. Sun & Nuclear Fusion Notes • The Sun changes more than 600 million tons of hydrogen into helium every second!

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