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10 Cards in this Set
- Front
- Back
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How do stars shine? |
Fusion releases energy in the form of light |
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what is a defining characteristic about stars? |
They create their own autonomous energy through fusion |
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How does the sun hold itself up against self gravity |
Nuclear fusion |
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what is nuclear fusion? |
a nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy. |
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How is the sun structured? |
OUTSIDE THE SUN corona is the outermost layer chromosphere is the middle layer photosphere is the lowest layer INSIDE THE SUN Convection zone is first layer radiation zone is next-core-fusion reactions happen here |
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What is the chemical composition of the sun and how does it compare to those planets? |
The sun is mostly comprised of hydrogen and helium, much like the jovian panets |
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What fusion reaction is the sun primarily using and where? |
Nuclear fusion in the core |
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What was the solar neutrino problem? |
Most neutrinos were going undetected because their properties changed during their journey from the solar core to earth there are 3 types of neutrinos |
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what are sunspots and why are they relatively dark? |
sunspots appear dark because they are cooler than the surrounding photosphere. Magnetic fields present hot plasma from entering them. |
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what drives the solar activity cycle? |
magnetic field growth |
