Term
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Definition
| Gravitational Contraction made its core hot enough to sustain nuclear fusion. |
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Term
| How does the sun sustain balance? |
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Definition
1. gravitational equilibrium – a balance between the outward push of pressure and the inward pull of gravity
2. Energy balance between the energy released by fusion in the core and the energy radiated into space front he sun's surface. |
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Term
| What is the sun's structure? |
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Definition
Interior- core, radiation zone, and convection zone.
exterior- photosphere, chromosphere, and corona |
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Term
| What is important about the Chromosphere (sun) |
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Definition
| radiates most of the sun's ultraviolet radiation |
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Term
| What is the Photosphere (sun) |
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Definition
| the sun's surface, where the sun spots happen because of extreme magnetic fields |
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Term
| what happens in the Convection Zone (sun) |
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Definition
| hot air raises, cold air falls |
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Term
| what happens in the Radiation Zone (sun) |
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Definition
| energy moves outward primarily in the form of photon of light. |
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Term
| What happens in the Core (sun) |
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Definition
| nuclear fusion transforms hydrogen into helium. |
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Term
what is the correlation of temperature with depth in the sun?
(sun) |
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Definition
| temperature rises with depth |
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Term
| How does nuclear fusion occur in the sun? |
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Definition
| proton-proton chain, due to high temp in the core |
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Term
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Definition
4H --> 1He + Energy
Helium nucleus has less mass than the combined 4H nuclei. When they fuse, the disappearing mass becomes energy according to E=mc^2 |
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Term
| Neutrinos (proton-proton chain) |
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Definition
| provide a direct way to measure nuclear fusion in the sun and recent results indicate that fusion occurs as our models predict |
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Term
| Types of Neutrinos (proton-proton chain) |
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Definition
| a.) electron neutrinos b.) muon neutrinos c.) tau neutrinos |
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Term
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Definition
cooler than the plasma around it because magnetic fields.
sunspots tend to happen in pairs. |
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Term
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Definition
| the loops connecting sun spots |
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Term
| What causes Solar activity (sun) |
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Definition
| convection combined with the rotation pattern of the sun. Which is faster at the equator than at the poles. Because the gas motions stretch and twist the sun's magnetic field. |
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Term
| Four types of solar activity (sun) |
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Definition
| 1. sunspots 2. solar flares 3. solar prominences 4.coronal mass ejections |
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Term
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Definition
| dramatic storm from energy released when the magnetic field lines snap which sometimes eject burst particles into space. |
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Term
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Definition
| the huge bubbles full of energetic particles ejected during solar flares |
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Term
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Definition
Number of sunspots on the sun's surface has an average of 11 years.
magnetic field flip-flops every 11years. |
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Term
| what is the magnetic cycle of the sun? |
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Definition
| 22-year (flips every 11 years) |
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