A) No one knows why that part of the Sun's atmosphere does not drift away into space.
B) During total solar eclipses, the corona sometimes disappears from view.
C) The corona seems to absorb 2/3 of the neutrinos that pass through it.
D) The corona is much hotter than layers of the Sun that are closer to the solar interior.
E) The Sun's corona extends to the outer reaches of the solar system.
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A) Granules
B) Sunspots
C) Flares
D) Prominences
E) Coronal holes
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A) chromosphere.
B) transition zone.
C) corona.
D) radiative zone.
E) granulation in the photosphere.
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A period of unusually low solar activity...View Answer
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A) Halley's Comet's nucleus
B) The Earth
C) Mercury
D) The Moon
E) Jupiter
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Protons and electron...View Answer
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A) disappears.
B) is more irregular.
C) cools almost to the temperature of the photosphere.
D) becomes smooth and even.
E) shrinks to half its normal size.
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A) droughts in North America.
B) asteroid impacts on Earth.
C) change of which political party has the majority in the U.S. Congress.
D) the length of Mercury's day.
E) the length of Saturn's year.
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A) They would appear blue-white, like Sirius but brighter.
B) Because sunspots are dark spots, they would be invisible against the blackness of space.
C) They would shine bright orange in color, like Arcturus.
D) They would not appear any differently than on the surface of the Sun.
E) They would shine only with reflected sunlight, appearing similar to Venus.
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A) the temperature of the core of the Sun.
B) the structure of the atmosphere of the Sun.
C) the interior structure of the Sun.
D) the production of energy in the Sun.
E) the magnetic field of the Sun.
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The process of convection is r...View Answer
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A) are always found close to the Sun's poles.
B) come in pairs, representing the north and south magnetic fields.
C) were most numerous during the Maunder Minimum.
D) travel over the surface of the Sun from pole to pole.
E) are relatively constant in number every year.
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The solar cycle is the periodic reversal...View Answer
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