THE SUN FROM THE INSIDE OUT

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THE SUN FROM THE INSIDE OUT
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Core- takes up 10 of the space BUT contains 40
of the mass! It reaches 27 million degrees
Fahrenheit. This is where NUCLEAR FUSION occurs!
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The Solar Envelope is made up of the radiation
and convection zones. These zones take up 90 of
the volume but 60 of the mass. Temperature here
reaches 7 million F. The mass of this area puts
pressure on the core, keeping the core very warm.
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The hot gases radiate outward from the core, but
as heat builds up in the radiation zone, the heat
will start to move by convection, in huge circles.
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This is the layer from which light is EMITTED
that we can see. Temperature here is 6000 Kelvin.
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We see this as a red ring during a solar eclipse.
Temperatures here are hotter than the photosphere.
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The corona is the outermost layer of the Suns
atmosphere. Visible only during an eclipse,
temperatures range from 2 million to 5 million º
F.
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Cooler spots found on the photosphere, usually
one is the size of Earth, come in cycles every
10-11 years
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Solar Flares are sparks of energy, the size of
Earth, very hotcan be 20 million F!
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Less violent than solar flares, a prominence is
cooler, larger, and lasts longer than solar
flares.
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Bibliography Fusion Physics of a Fundamental
Energy Source From Core to Corona. March 9,
2006. lthttp//FusEdWeb.llnl.gov/CPEP/gt
Continue to next slide for the quiz!
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QUIZ-Name the layers and activities
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Answers to quiz

• - Corona
• --Solar Flare (flares are more violent but
  smaller than prominence)
• Prominence (cooler but larger than solar flares)
• -Radiation Zone
• - Convection Zone
• -Photosphere

• -Chromosphere
• Core
• Sunspot
• - Photosphere

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Quiz 2-How well do you know the Sun?

• Size?
• Temperature?
• Composition?
• Age?
• Life span left?

• Medium sized
• Medium temperature
• Hydrogen helium
• About 4.5-5 billion yr.
• About 5 billion yr.

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Quiz continued---

• Distance from Earth
• Time for light to get here from the Sun
• Next closest star to Earth
• Closest star to Earth

• 93 million miles, 150 million Km
• 8.2 minutes
• Proxima Centuari (4.2 light years away)
• Sun