define sunspots
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- Sunspots are magnetic regions on the Sun with magnetic field strengths thousands of times stronger than the Earth's magnetic field. Sunspots usually come in groups with two sets of spots. One set will have positive or north magnetic field while the other set will have negative or south magnetic field. The field is strongest in the darker parts of the sunspots - the umbra. The field is weaker and more horizontal in the lighter part - the penumbra. Click on image for larger version.
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- The temperature in the photosphere is about 10,000 degrees F (5,500 degrees C). It is here that the sun's radiation is detected as sunlight. Sunspots on the photosphere are cooler and darker than the surrounding area. At the center of big sunspots the temperature can be as low as 7,300 degrees F (4,000 degrees C). The chromosphere, the next layer of the sun's atmosphere is a bit cooler — about 7,800 degrees F (4,320 degrees C).
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Sunspots and Solar Storms At sunspot maximum, the faculae are also at maximum and make the Sun appear slightly (about 0.1%) brighter than at sunspot minimum. Sometimes there are active events called solar prominences associated with sunspots when loops or sheets of glowing gases are ejected from active regions.
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Photosphere: Definition & Features The Photosphere and Sunspots. The visible glowing surface of the sun is more appropriately called the photosphere, and it has a darker edge, called a 'limb.' It's darker because the temperature in the sun's photosphere decreases outward.either the photosphere nor the interior of the sun is solid-it's gaseous instead. A sunspot is a relatively dark spot on the sun with a lower temperature than the other parts of the photosphere. Sunspots occur in places where the magnetic field in the photosphere is many times stronger than average.
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Sunspots and Solar Storms The sunspots represent cooler regions on the Sun's surface. Chaisson & McMillan report typical temperatures of 4500K for the umbra and 5500K for the penumbra, compared to about 5780K as the effective surface temperature of the Sun's surface.
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Why are Sunspots dark? Why are Sunspots dark? I think is A but im not sure. Which one is correct? A. the are cool relative to the gas around them B. they contain 10 times as much iron as surroundings regions C. nuclear reactions occur in them more slowly than in the surroundings gas.
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- Solar flares, CMEs and geomagnetic storms are examples of extreme sun activity that can send bursts of energy toward Earth. Some of this energy is in the form ionizing radiation and some of the energy is magnetic energy. Sunspots. Sunspots are areas of very strong magnetic fields on the surface of the sun.
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Sunspot For other uses, see Sunspot (disambiguation). Sunspots are temporary phenomena on the photosphere of the Sun that appear as dark spots compared with surrounding regions. They are areas of reduced surface temperature caused by concentrations of magnetic field flux that inhibit convection. Sunspots usually appear in pairs of opposite magnetic polarity.
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- This loop is called a solar prominence and such features appear because of the magnetic field of the Sun. Sunspots are also responsible for bright bursts from the surface called solar flares and the more there are, the brighter the Sun appears!
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Sunspots could soon disappear for decades: study Sunspots have been observed at least since the early 17th century, and they are known to follow an 11 year cycle from solar maximum to solar minimum. The solar minimum usually lasts around 16 months, but the current minimum has already lasted 26 months, which is the longest minimum in a hundred years.
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- The Sun has a magnetic field that gets twisted around inside the Sun as it spins. There are places on the Sun where this magnetic field rises up from below the Sun's surface and pokes through, creating sunspots. Sunspots are magnetic and often have a north and south pole like a magnet.
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- The Sunspot Cycle. In fact they go around twice. By studying the sun's magnetic field, modern astronomers have discovered that the cycle covers twenty-two years, with each eleven-year cycle of sunspots followed by a reversal of the direction of the Sun's magnetic field.
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- Sunspots. 1  Sunspots are dark areas of irregular shape on the surface of the Sun. 2  The scientific study of sunspots in the West began after the telescope had been brought into astronomy in 1609. 3  In the meantime, Galileo had shown sunspots to a number of people in Rome during his triumphant visit there in the spring of 1611.
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The Sunspot Cycle The number of sunspots seen on the  surface  of the Sun changes from year to year. This rise and fall in sunspot counts is a cycle. The length of the cycle is about eleven years on average. The Sunspot Cycle was discovered in 1843 by the amateur German astronomer Samuel Heinrich Schwabe. A peak in the sunspot count is called solar maximum (or solar max).
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- Solar Flares. A solar flare is an enormous explosion in the solar atmosphere. It results in sudden bursts of particle acceleration, heating of plasma to tens of millions of degrees, and the eruption of large amounts of solar mass.
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- Sunspots are magnetic in nature. They are the places (active regions) where the Sun's magnetic field rises up from below the Sun's surface and those magnetic regions poke through. Sunspots are darker than the surrounding areas because they are expending less energy and have a lower temperature. Sunspots often have poles (polarity) like the south and north poles of magnets. Sunspots are formed continuously as the Sun's magnetic field actively moves through the Sun. The sunspots have lifetimes of days or perhaps one week or a few weeks. Here is one scenario that some scientists think explains how sunspots form.
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Sun Sunspots are spots on the photosphere, or surface of the Sun. These occur due to magnetic activity that reduces the surface temperatures. These occur only once every eleven years. These spots can spread to be 50,000 miles in diameter.
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What do Sunspots do? Best Answer: Sunspots don't really do anything. They are magnetic storms on the Sun, cooler areas on the Sun's surface. They have absolutely no effect of the Earth's weather.Solar flares related to them do affect the visibility of aurora and, in extreme cases, interfere with telecommunications.unspots are actually the harbingers of magnetic activity on the Sun which can accelerate particles near the Sun to high energies, and eject them during flare events and Coronal Mass Ejections.
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Definitions &Translations In vertebrate anatomy, the throat is the anterior part of the neck, in front of the vertebral column. It consists of the pharynx and larynx. An important feature of the throat is the epiglottis, a flap which separates the esophagus from the trachea and prevents inhalation of food or drink.
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- A solar flare is a magnetic storm on the Sun which appears to be a very bright spot and a gaseous surface eruption such as in the above photograph. Solar flares release huge amounts of high-energy particles and gases that are tremendously hot. They are ejected thousands of miles from the surface of the Sun.
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sunspots An 11-year cycle during which the number of sunspots rises to a maximum or falls to a minimum.The periodic change in the number of sunspots; the cycle is taken as the interval between successive minima and is about 11.1 years.
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- Sunspots on Skin. Sunspots or Solar lentigines are dark portions of the skin that develop after prolonged exposure to direct ultra violet or UV rays. People of all ages are susceptible to these spots, though those with lighter skin tend to develop them more frequently.
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- Solar Maximum. During a 'solar max' sunspot activity is heightened offering more chances to see the northern lights. Sunspots are dark, cool areas of the sun's surface which erupt causing the sun to fire out its solar flares or charged particles - the catalysts for the northern lights.
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- Definition of sunspot cycle. : the time between maxima in the varying numbers of sunspots averaging about 11 years but sometimes being many years shorter or longer.