Granulation is evidence of what phenomenon? Convection in the solar interior. Convection occurs just below the photosphere.
What phenomenon is related to the granulation of the solar surface?
A granule is a convection cell in the Sun’s photosphere. They are caused by convection currents of plasma in the Sun’s convective zone, directly below the photosphere. The grainy appearance of the solar photosphere is produced by the tops of these convective cells and is called granulation.
What evidence do we have that the granulation seen on the sun’s surface is caused by convection? The bright centers of granules are hotter than their dark boundaries and Doppler measurements indicate that the centers are rising and edges are sinking.
What is granulation in the Sun quizlet?
the layer of the sun’s atmosphere that has a reddish glow. What is granulation in the Sun? the bubbling pattern on the photosphere produced by the underlying convection.
Granules on the photosphere of the Sun are caused by convection currents of plasma within the Sun’s convective zone. The grainy appearance of the solar photosphere is produced by the tops of these convective cells and is called granulation. It indicates that convection is taking place from the interior.
What is the explanation for the pattern of granulation?
What is the explanation for the pattern of granulation seen on the visible surface of the Sun? The granules are the tops of hot gas that have risen from the Sun’s convective zone. The gas motions within granules on the solar surface are: upward in bright cell centers and downward around the darker edges.
What is the meaning of granulation?
Definition of granulation 1 : the act or process of granulating : the condition of being granulated. 2 : one of the minute red granules of new capillaries formed on the surface of a wound in healing.
Which of the following is evidence that granulation is caused by convection below the photosphere?
Which of the following is evidence that granulation is caused by convection below the photosphere? The centers of granules are rising and their edges are falling. Why are sunspots cooler than the photosphere?
What causes granulation quizlet?
Granulation is caused by rising currents of hot gas below the photosphere. Sunspots are hotter than the photosphere.
What evidence do we have that sunspots are magnetic?
We know that sunspots are magnetic because we can directly observe the effect that the field has on the spectral lines we observe through a phenomenon called the Zeeman effect.
What causes the pattern of granulation that we see in the Sun’s photosphere?
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.
Which of the following is used to refer to the surface of the Sun?
The boundary between the Sun’s interior and the solar atmosphere is called the photosphere. It is what we see as the visible “surface” of the Sun.
What observation characterizes solar maximum?
What observations characterize solar maximum? We see many sunspots on the surface of the sun. Solar max is when the sun is most active, so there are more solar flares.
What causes sunspots on the Sun?
Sunspots are caused by disturbances in the Sun’s magnetic field welling up to the photosphere, the Sun’s visible “surface”. The powerful magnetic fields in the vicinity of sunspots produce active regions on the Sun, which in turn frequently spawn disturbances such as solar flares and coronal mass ejections (CMEs).
What causes sunspots to move?
As the sunspots are a result of magnetic processes in the Sun, they move in the direction of its magnetic field lines. As shown in Figure 9 the Sun’s magnetic field lines are extended parallel to the Page 14 equator and become twisted. Therefore, sunspots move mainly parallel to the equator.
What are Supergranules on the Sun?
Supergranules cover the sun’s visible surface (photosphere) in a network of “cells” called supergranulation. The cells are amorphous regions of horizontal outflows of electrified gas (plasma). Supergranules get their name from their resemblance to smaller features in the photosphere called granules.
What causes granulation on the photosphere quizlet?
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 grainy appearance of the solar photosphere is produced by the tops of these convective cells and is called granulation.
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 evidence do we have that the chromosphere is hotter than the photosphere?
What evidence do we have that the chromosphere is hotter than the photosphere? Astronomers know that the chromosphere is hotter than the photosphere through observing the amount of ionization. They observe that the chromosphere is hot enough to produce x-rays that can be studied with telescopes.
What is another word for granulation?
In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for granulation, like: granulation-tissue, exudate, autolysis, necrotic-tissue, desquamation, thickening, exudates and flocculation.
What is granulation Slideshare?
1. Granulation is the process in which primary powderGranulation is the process in which primary powder particles are made to adhere to form larger,particles are made to adhere to form larger, multiparticle entities called granules.multiparticle entities called granules.
What is granulation in art?
Granulation is the effect you get when the pigment particles clump together rather than settling evenly on the painted surface. As a very general rule, the finer the particles, the less they granulate.
What is the evidence in the photosphere of the type of energy transport occurring beneath it?
A certain type of energy transport (radiation, convection, or conduction) occurs just below the photosphere. What evidence is there for this energy transport? These features are cooler at their edges and hotter at their centers.
Where does granulation occur?
Granulation tissue is new connective tissue and microscopic blood vessels that form on the surfaces of a wound during the healing process. Granulation tissue typically grows from the base of a wound and is able to fill wounds of almost any size.
What is the reason that the evidence in Part B suggests the type of energy transport in Part A )?
What is the reason that the evidence in part (b) suggests the type of energy transport in part (a)? The sun gives off radiation. There is no evidence of the types of energy transport occurring in the sun. These features are at a much lower temperature than the rest of the photosphere.
Is granulation is caused by rising currents of hot gas below the photosphere?
In the sun, rising currents of hot gas below the photosphere cause granulation. energy is produced in the form of gamma rays and the velocity of the created nuclei.
What is an heliopause in astronomy?
The heliopause is the boundary between the Sun’s solar wind and the interstellar medium. The solar wind blows a “bubble” known as the heliosphere into the interstellar medium. The outer border of this “bubble” is where the solar wind’s strength is no longer great enough to push back the interstellar medium.
What does chromosphere mean in science?
: the region of the atmosphere of a star (such as the sun) between the star’s photosphere and its corona.
What does a Maunder butterfly diagram show?
The Maunder Butterfly diagram shows the position of sunspots since 1950 and shows that these sunspots first form at mid-latitudes and then widen and move towards the solar equator as each solar cycle progresses.
What evidence can you give that the corona has a very high temperature quizlet?
What evidence can you give that the corona has a very high temperature? Its spectrum shows that atoms in the corona are highly ionized so the gas must be at a high temperature. What color is the photosphere as viewed from the ground on a clear, cloudless day when the Sun is highest overhead?
What does a Maunder butterfly diagram show quizlet?
What does a Maunder butterfly diagram show? During the 11-year sunspot cycle, the spots begin at high latitude and then form progressively closer to the equator.
What are the distinctive characteristics of the chromosphere?
The Chromosphere The thin chromosphere is heated by energy from the photosphere. Temperatures range from about 4,000°C to about 10,000°C. The chromosphere is not as hot as other parts of the Sun, and it glows red. Jets of gas sometimes fly up through the chromosphere.
What’s the chromosphere of the Sun?
The lower region of the Sun’s atmosphere is called the chromosphere. Its name comes from the Greek root chroma (meaning color), for it appears bright red when viewed during a solar eclipse. The chromosphere extends for about 2,000 kilometers (1,200 miles) above the visible surface of the Sun.
How can astronomers detect structure in the chromosphere?
How can astronomers detect structure in the chromosphere? Ans: The structure of the chromosphere is studied primarily using filtergrams. Filtergrams are images of the sun taken through a filter that lets in a very narrow wavelength band of light, such as light emitted by the Hydrogen-alpha transition.
What phenomenon occurs on Earth as a result of solar flares on the Sun?
What phenomenon occurs on Earth as a result of solar flares on the Sun? Northern lights.
What is the difference between the photosphere and chromosphere?
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.
How do observations of the Sun’s surface tell us about conditions in the solar interior?
How do observations of the Sun’s surface tell us about conditions in the solar interior? Observations of the Sun’s surface can tell us about the Sun’s differential rotation, as well as see the oscillations of the Sun, which are the result of vibrations from internal pressure waves.
What evidence do we have to support our current ideas about the solar interior?
We see many sunspots on the surface of the Sun. Humans have not sent a spacecraft into the interior of the Sun to confirm any models of the interior. What evidence then do we have to support our current ideas about the solar interior? Solar neutrinos!
What happens on Earth during solar maximum?
Every 11 years the Sun’s magnetic cycle ramps up into overdrive. At the height of this cycle, known as solar maximum, the Sun’s magnetic poles flip. Along the way, changes in the Sun’s magnetism produce a greater number of sunspots, more energy and cause solar eruptions of particles.
Why are neutrinos so difficult to detect?
Why are neutrinos so hard to detect? Neutrinos are very hard to detect because they have no electric charge. But when a neutrino passes through matter, if it hits something dead-on, it will create electrically charged particles. And those can be detected.
Does the sun have corona?
The corona is the outer atmosphere of the Sun. It extends many thousands of kilometers (miles) above the visible “surface” of the Sun, gradually transforming into the solar wind that flows outward through our solar system. The material in the corona is an extremely hot but very tenuous plasma.
What is the photosphere made of?
The Sun’s photosphere is around 100 kilometers thick, and is composed of convection cells called granules“cells of plasma each approximately 1000 kilometers in diameter with hot rising plasma in the center and cooler plasma falling in the narrow spaces between them, flowing at velocities of 7 kilometers per second.
Does the sun rotate?
The Sun rotates on its axis once in about 27 days. This rotation was first detected by observing the motion of sunspots. The Sun’s rotation axis is tilted by about 7.25 degrees from the axis of the Earth’s orbit so we see more of the Sun’s north pole in September of each year and more of its south pole in March.
What causes the Sun’s magnetic field to become tangled?
Over time, the Sun’s differential rotation rates cause its magnetic field to become twisted and tangled. The “tangles” in the magnetic field lines can produce very, very strong localized magnetic fields. Places where “ropes” of bundled field lines “break” the surface of the Sun are active regions where sunspots form.
What evidence is there that sunspots are magnetic?
Finally, to answer your question: astronomers know that sunspots are associated with magnetic fields because they can look at the spectral lines that come from the sunspots and measure by how much these lines are split.
What causes prominences on the Sun?
The prominence plasma flows along a tangled and twisted structure of magnetic fields generated by the sun’s internal dynamo. An erupting prominence occurs when such a structure becomes unstable and bursts outward, releasing the plasma.