Earth science 24.3

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Earth science 24.3

  1. 1. 24.3 The Sun <br />
  2. 2. Photosphere<br />The region of the sun that radiates energy to space; visible surface of the sun.<br />
  3. 3. Chromosphere<br />The first layer of the solar atmosphere found directly above the photosphere.<br />
  4. 4. Corona<br />The weak layer of the solar atmosphere.<br />
  5. 5. Solar Wind<br />Streams of protons and electrons ejected at high speed from the solar corona.<br />
  6. 6. Sunspot<br />A dark spot on the sun, Which is cooled by contrast to the surrounding photosphere. <br />
  7. 7. Prominence <br />A concentration of gases above the solar surface that appears as a bright arch-like structure.<br />
  8. 8. Solar Flare<br />A sudden and tremendous eruption in the solar chromosphere. <br />
  9. 9. Aurora<br />A bright display of ever-changing light caused by solar radiation interacting with the upper atmosphere in the regions of the poles. <br />
  10. 10. Nuclear Fusion<br />The way in which the sun produces energy; nuclear fusion occurs when less massive nuclei combine into more massive nuclei, releasing tremendous amounts of energy.<br />
  11. 11. Key Concept<br />Keeping this in mind, we can divide the sun into four parts: the solar interior; the visible surface, or photosphere; and two atmospheric layers, the chromosphere and corona.<br />
  12. 12. Key Concept<br />Sunspots appear dark because of their temperature, which is above 1500 K less than that of the surrounding solar surface.<br />
  13. 13. Key Concept<br />Prominences are ionized gases trapped by magnetic fields that extend from regions of intense solar activity.<br />
  14. 14. Key Concept<br />During their existence, solar flares release enormous amounts of energy, much of it in the form of ultraviolet, radio, and X-ray radiation. <br />
  15. 15. Key Concept<br />During nuclear fusion, energy is released because some matter is actually converted to energy.<br />

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