What causes granulation in the Sun?
What is the explanation for the pattern of granulation seen on the visible surface of the Sun?
Close-up views of the photosphere also show patterns of light areas surrounded by darker borders called “granulation.” Similar to the patterns you can see at the top of a pot of boiling water or oatmeal granulation is caused by heat rising upward to the photosphere from the hotter solar interior.
What are solar granules quizlet?
Granules. Granules on the photosphere of the Sun are caused by convection currents (thermal columns Bénard cells) of plasma within the Sun’s convective zone. The rising part of the granules is located in the center where the plasma is hotter. The outer edge of the granules is darker due to the cooler descending plasma …
Which part of the Sun is covered with granules?
Seen through a telescope the photosphere has a granular appearance. These granules are small convection cells——about 1000 kilometers (just over 621 miles) across——that carry the energy from below the apparent surface. Granules cover the entire Sun except for those areas covered by sunspots.
What causes the granular appearance of the surface of the Sun quizlet?
The cells are the tops of blobs of hot gas that have risen from the Sun’s convective zone. The granular appearance of the surface of the Sun is evidence of what phenomenon occurring in or on the Sun? Convection currents. Upward in the bright cell centers and downward around the darker edges.
What causes granulation quizlet?
d) the solar wind flowing away from the corona. e) the heating in the chromosphere. rising gas below photosphere. a) is hotter than the photosphere.
What causes the bubbling pattern of granulation that we see in the Sun’s photosphere quizlet?
the magnetic field of the Sun stops hot bubbles of gas from rising causing the region to cool off. … What is granulation in the Sun? the bubbling pattern on the photosphere produced by the underlying convection. What are (from granulation) granules?
What does granulation tell us about the layers below the photosphere?
What does the granulation tell us about the layers below the photosphere? Since granules on the sun’s photosphere are constantly growing and shrinking astronomers can assume that convection currents are happening below it where the gas rises and falls due to heat.
Why granulation is required?
Why is Granulation Necessary? The granulation process allows particles to stick together more firmly. It increases the particle size of the constituents used which are mostly very fine powders. The greater the particle size of a constituent greater will be its compressive or binding ability.
What is granulation in the Sun Group of answer choices?
The solar wind is ionized gas streaming away from the sun. Granulation is caused by convection. The temperature of the corona is millions of degrees. … Due to the required temperatures fusion occurs only in the core of the sun.
What makes the Sun’s surface look mottled like an orange?
Carried by the Sun’s changing magnetic field a filament also known as a prominence of hot gas rose from the star’s surface. … The orange color is especially bright near the Sun’s surface but fainter wisps of orange also appear farther from the star.
What evidence of convection is visible on the surface of the Sun?
The convection current is occupied by the rising and sinking gas. Thus we can infer that the motion of the gas is from the numerous tiny bright regions surrounded by darker zone which is called granulation. Therefore granulation is the visible evidence from where we know Sun has a convection zone.
Where does the Sun get energy?
What do granules look like?
What is the visible surface of the Sun called?
Photosphere
Photosphere – The photosphere is the deepest layer of the Sun that we can observe directly. It reaches from the surface visible at the center of the solar disk to about 250 miles (400 km) above that.Oct 10 2012
What is the cellular granulation pattern seen on the visible surface of the Sun quizlet?
What is the explanation for the bright cells of photospheric gases that make up the cellular granulation pattern seen on the visible surface of the Sun? The cells are the tops of blobs of hot gas that have risen from the Sun’s convective zone.
What is a Plage quizlet?
A plage is a bright region in the chromosphere of the Sun typically found in regions of the chromosphere near sunspots. Coronal Mass Ejection. the most energetic of all solar eruptions which blasts plasma out from the corona and is followed by a solar flare.
What causes limb darkening?
What is the name of a sudden highly energetic eruptive surge on the surface of the Sun?
What are the three layers of the Sun’s atmosphere in order of increasing distance from the surface?
In which part of the Sun’s atmosphere is the source of the Sun’s visible light?
photosphere
The photosphere is about 300 km thick. Most of the Sun’s visible light that we see originates from this region. The chromosphere is about 2000 km thick. We only see this layer and the other outer layers during an eclipse.
What is responsible for the sunspots on the Sun surface?
Sunspots are darker cooler areas on the surface of the sun in a region called the photosphere. The photosphere has a temperature of 5 800 degrees Kelvin. … They are caused by interactions with the Sun’s magnetic field which are not fully understood.
Where does most of the visible light we see coming from the Sun originate?
Most of the visible light from the sun originates in the photosphere. Granulation is caused by rising currents of hot gas below the photosphere.
Why does he surface of the Sun appear to bubble and churn?
The Sun’s surface seethes and churns with a bubbling pattern. Why? We are seeing hot gas rising and cool gas falling due to the convection that occurs beneath the surface. … The Sun generates energy by fusing small nuclei into larger ones while our power plants generate energy by the fission (splitting) of large nuclei.
Why is photosphere granulated?
Large-scale images of the photosphere show a granular structure. Each granule or cell is a mass of hot gas 1 000 km (600 miles) in diameter the granules rise because of convection inside the Sun radiate energy and sink back within a few minutes to be replaced by other granules in a constantly changing pattern.
What are problems of granulation?
Nevertheless granulation poses numerous challenges due to high quality requirement of the formed granules in terms of content uniformity and physicochemical properties such as granule size bulk density porosity hardness moisture compressibility etc. together with physical and chemical stability of the drug.
What is the process of granulation?
Granulation is the process of forming grains or granules from a powdery or solid substance producing a granular material. It is applied in several technological processes in the chemical and pharmaceutical industries. … Less commonly it involves shredding or grinding solid material into finer granules or pellets.
How granules are formed?
Granules are formed by the binding together of powder particles. Sufficiency strong bonds much be formed between particles so that they adhere and do not break. There are five recognized bonds that form between particles: adhesive and cohesive forces in the immobile liquid between particles.
What evidence can you give that granulation is caused by convection quizlet?
The evidence for granulation being caused by convection is that convection is caused by the mottled appearance of the solar photosphere caused by gases rising from the interior of the Sun.
What are sun spots on the Sun?
Does the Sun have a crust?
How does energy generated by fusion makes its way to the Sun’s surface?
Describe the processes by which energy generated by fusion makes its way to the Sun’s surface. … The energy goes from the core to the radiation zone as photons. The photons bounce around until they reach the top of the radiation zone when the temperature cools and the plasma can absorb the photons.
What element will build up in the Sun’s core causing all fusion in the Sun to stop?
The Sun has about 5 billion years worth of hydrogen with which it can produce energy. When five billion years are up fusion in the Sun’s core will cease and gravity will cause the star to collapse.
Where does convection happen in the Sun?
Convection in the Sun
Hot plasma rises from the core towards the surface where it cools and sinks back towards the core. This process forms convection cells that we see as solar granules.
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