Term
| What feature of the photosphere is evidence for convection in the Sun? |
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Definition
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| The visible surface of the Sun has a temperature of about |
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Definition
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| The core of the Sun has a temperature of about |
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Definition
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Definition
| a stream of charged particles ejected from the surface of the Sun into the solar system. |
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Term
| Sunspots,flares and prominences are related to what physical effect? |
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Definition
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Term
| What process provides the energy source for the sun? |
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Definition
| hydrogen nuclei are being fused together to make helium nuclei |
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Definition
| an extremely dense, hot hydrogen plasma undergoing fusion |
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Term
| The most abundant element in the Sun is |
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Definition
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Term
| Compared to the photosphere the corona is |
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Definition
| much hotter and much less dense |
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Term
| The Sun's diameter is about ____ times as large as the Earth's |
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Term
| The Sun rotates approximately once per |
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Definition
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| Sunspots on the sun appear |
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Definition
| in cycles between almost no sunspots and dozens of sunspots, going back and forth every year |
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Term
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Definition
| is violent active, with enormous jets and explosions happening very often |
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Term
| The luminosity of the sun measures |
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Definition
| the total amount of energy escaping from Sun every second from all sources |
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Term
| Sunspots appear as dark blotches on the surface of the sun because they |
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Definition
| are cool areas with temperature of about 4500K |
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Term
| The most dangerous and energetic events in the sun's atmosphere are |
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Definition
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Term
| In terms of its total lifetime, the Sun is |
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Definition
| about halfway through its life |
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Term
| The outermost layer of the Sun's atmosphere is the |
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Definition
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Term
| Solar prominences, huge loops of ionized gas lifted from the surface of the sun, often are physically connected to |
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Definition
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Term
| The core of the sun has a temperature of about |
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Definition
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Term
| Nuclear fusion in the sun occurs |
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Definition
| only in the deepest layers of the Sun |
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Term
| Why are scientists concerned with studying and predicting solar weather? |
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Definition
| Solar storms can have damage satellites and astronauts , and affect communications |
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Term
| A solar storm can cause effects on Earth within about |
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Definition
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Term
| Nuclear fusion in any star only occurs in hydrogen plasma at a temperature of at least |
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Definition
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Term
| The temperature and density of the Sun's interior |
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Definition
| is extremely high n a small region around the center and drops off sharply through the outer layers |
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