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26 Cards in this Set
- Front
- Back
Fom inside out, which is in the correct order for the structure of the sun? |
Core, radiative zone, convective zone, chromosphere |
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The speed of light is 300,000 km/s. if 2.00 kg of mass is converted into energy, how much energy will be produced? |
1.8x10^17 |
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The most striking example of solar variability was the: |
Maunder minimmum from 1645-1715
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Granulation is the most obvious proof of solar convective energy transport |
True |
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The solar wind is constantly removing mass from the sun |
True |
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Solar neutrino problem is that we observe more neutrinos than predicted |
False |
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The solution to the solar neutrion problem was |
2/3 of the neutrinos transform into a new type during the 8 minue trip to earth |
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Visible sunspots lie in the |
Granulation in the photosphere |
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Whil observing the sun, you note a large number of sunspots. What can you conclude? |
There are likely to be an above average number of flares and prominences |
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As the sun rotates, an individual sunspot can be tracked across its face. From eastern to western limb, this takes about |
2 weeks |
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Sunspots are dark splotches on the sun. Which statement is true? |
They are extremely hot, but cooler than the surrounding areas of the sun |
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In the proton-proton cycle, the helium and neutrino have less mass than the original hydrogen. What happened to the lost mass? |
It is converted into energy
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Suppose a large flare is detected optically. How long until radio interference arrives? |
Simultaneously |
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In the proton-proton cycle, the positron is: |
An anti-electron |
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Compared to the underlying photosphere and chromosphere, the corona is ___________ in temperature |
Much hotter |
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The temperature of the photosphere is about |
5,800 K |
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THe outward pressure of hot gas in the Sun is: |
Balanced by the inward gravitational pressure
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The strongest magnetic fields in the photosphere lie near |
Sunspots
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During a pepriod of high solar activity, most sunspots lie near the Sun's |
Equator |
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What is the meaning of the solar constant? |
The amount of energy the Earth receives per unit area and time |
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What two energy transport mechanisms, in order from outside the core to teh surface, are found in the sun? |
Radiation, convection |
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Which is the net result of the proton-proton chain? |
4 protons --> 1 helium 4+2 neutrinos + gamma rays |
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During a period of high solar activity, the corona |
is more irregular |
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The critical temperature to initiate the proton-proton cycle in the cores of stars is |
10 million K |
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The only particle we can directly observe coming out of the Sun's core is the |
neutrino |
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Nuclear __________ explains the sun's immense and sustained energy output |
Fusion |