The Sun is our local star<br />Space Science<br />Chapter 4: Section 4.1<br />
The sun:What is the sun made of? Is it a solid? A liquid? Or a gas?<br />Gas- made mostly of hydrogen and helium<br />
Is the Sun consistent? Or does it have layers?<br />The sun has 6 layers<br />
How does the sun make it’s energy?<br />Fusion- the process in which hydrogen is converted into helium<br />
Review: What is mass?<br />Anything that has matter and takes up space<br />
How massive is the sun?<br />Contains 99.9% of the mass of the entire solar system<br />
Layers of the sun<br />
The sun’s interior<br />Core<br />Where fusion takes place<br />Nuclear reaction, not chemical<br />Reaches 15 million deg...
Sun’s interior<br /><ul><li>Core
-Radiative Zone
- Convection Zone</li></li></ul><li>The sun’s atmosphere<br />Photosphere<br />The sun’s surface- the part you see when yo...
Sun’s atmosphere<br />-Photosphere<br />-Chromosphere<br />-Cornoa<br />
Sunspots<br />Spots on the photosphere that are cooler than surrounding areas<br />Appear dark but are bright<br /><ul><li...
Sunspots<br />Follow 11 year patterns<br />During peak season,  dozen of sunspots appear<br />
The more sunspots there are, the cooler earth is.Why?<br />NASA claims that in 2008 the sun had the fewest sunspots since ...
Prominences<br />Large bright features extending outward from the sun’s surface<br />Anchored to the photosphere<br />May ...
prominences<br />Made of ionized gases called plasma<br />
Solar winds<br />Electrically charged particles that flow in all directions from the cornoa<br />Deflected by the magnetic...
Solar winds<br />Approximate size of Earth for comparison<br />
Auroras<br />When the energy is released into the upper atmosphere of Earth they create auroras<br />Also known as norther...
NASA matching sun activity<br />
How are the images similar? Different?<br />
The yellow UV images show regions of intense activity above the surface of the sun<br />The black and white images show re...
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4.1 The Sun is our Local Star

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This is the presentation that will be presented on Wednesday November 18th 2009. It follows directly from the McDougal Littell: Space Science text.

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4.1 The Sun is our Local Star

  1. 1. The Sun is our local star<br />Space Science<br />Chapter 4: Section 4.1<br />
  2. 2. The sun:What is the sun made of? Is it a solid? A liquid? Or a gas?<br />Gas- made mostly of hydrogen and helium<br />
  3. 3. Is the Sun consistent? Or does it have layers?<br />The sun has 6 layers<br />
  4. 4. How does the sun make it’s energy?<br />Fusion- the process in which hydrogen is converted into helium<br />
  5. 5. Review: What is mass?<br />Anything that has matter and takes up space<br />
  6. 6. How massive is the sun?<br />Contains 99.9% of the mass of the entire solar system<br />
  7. 7. Layers of the sun<br />
  8. 8. The sun’s interior<br />Core<br />Where fusion takes place<br />Nuclear reaction, not chemical<br />Reaches 15 million degrees Celsius<br />Radiative Zone<br />Energy moves by radiation through this thick layer<br />Conditions not extreme enough for fusion to occur<br />Convection Zone<br />Convection- the transfer of energy from place to place by motion of heated gas or liquid<br />the currents of this hot gas carry energy towards the Sun’s surface<br />
  9. 9. Sun’s interior<br /><ul><li>Core
  10. 10. -Radiative Zone
  11. 11. - Convection Zone</li></li></ul><li>The sun’s atmosphere<br />Photosphere<br />The sun’s surface- the part you see when you look at the sun<br />Convection currents break through this layer<br />Making it appear bumpy in texture<br />Chromosphere<br />Thin middle layer<br />Gives off pinkish layer<br />Corona<br />Low density, outer most layer<br />Only seen during a total eclipse <br />
  12. 12. Sun’s atmosphere<br />-Photosphere<br />-Chromosphere<br />-Cornoa<br />
  13. 13. Sunspots<br />Spots on the photosphere that are cooler than surrounding areas<br />Appear dark but are bright<br /><ul><li>Seem dim because rest of photosphere is much brighter</li></ul>Finding Sunspots Activity<br />Light bulb Sun<br />Index cards<br />
  14. 14. Sunspots<br />Follow 11 year patterns<br />During peak season, dozen of sunspots appear<br />
  15. 15. The more sunspots there are, the cooler earth is.Why?<br />NASA claims that in 2008 the sun had the fewest sunspots since 1913 and that is the reason for the cooler weather in the northern hemisphere.<br />
  16. 16. Prominences<br />Large bright features extending outward from the sun’s surface<br />Anchored to the photosphere<br />May be thousand of km in length<br />
  17. 17. prominences<br />Made of ionized gases called plasma<br />
  18. 18. Solar winds<br />Electrically charged particles that flow in all directions from the cornoa<br />Deflected by the magnetic poles <br />
  19. 19. Solar winds<br />Approximate size of Earth for comparison<br />
  20. 20. Auroras<br />When the energy is released into the upper atmosphere of Earth they create auroras<br />Also known as northern or southern lights<br />
  21. 21.
  22. 22.
  23. 23.
  24. 24. NASA matching sun activity<br />
  25. 25. How are the images similar? Different?<br />
  26. 26. The yellow UV images show regions of intense activity above the surface of the sun<br />The black and white images show regions of magnetic connections break and reconnecting<br />Many of these areas appear as sunspots in simple images of the sun<br />
  27. 27. http://www.youtube.com/watch?v=PaSFAbATPvk<br />

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