What Is The Size Of A Typical Granule Or Convection Cell Seen In The Photosphere?

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What Is The Size Of A Typical Granule Or Convection Cell Seen In The Photosphere??

Each granule is about 1 000 km across.

What is a granule on the Sun?

Solar granules are cellular patterns visible in the outer layer (photosphere) of Sun associated with large scale vertical fluid motions at and just below the photosphere. The brighter central regions correspond to rising hotter fluid and the darker narrow lanes correspond to sinking colder fluid.

What is the cellular granulation pattern seen on the visible surface of the Sun?

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 granulation how is it related to convection?

Thus granulation just represents the tops of convection currents that are transferring heat from below the solar surface to the surface. In that sense granules are a little like the tops of cumulus clouds in the Earth’s atmosphere which are also associated with convection currents.

Which energy transport mechanism produces the granulation seen on the photosphere?

The granulation is produced by the convection (boiling) of the Sun’s gases.

What do granules look like?

In cell biology a granule is a small particle. It can be any structure barely visible by light microscopy. The term is most often used to describe a secretory vesicle.

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What are granules in cells?

Granules are particles in a cell’s cytoplasm that show up as small spots when the cell is examined through a microscope. They are often secretory vessels.

What occurs in the convection zone?

A region of turbulent plasma between a star’s core and its visible photosphere at the surface through which energy is transferred by convection. In the convection zone hot plasma rises cools as it nears the surface and falls to be heated and rise again.

What is the size of the Sun’s core?

about 200 000 miles

What we call the core of the sun is the inner part where the nuclear energy is released. This is the source of the energy that we see as light from the sun. The core is about one-fourth the size of the sun or about 200 000 miles across. That is still pretty big!

Which layer shown has convection of plasma within it that leads to granulation of the photosphere?

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.

What do you mean by granules?

Definition of granule

1 : a small particle especially : one of numerous particles forming a larger unit. 2 : any of the small short-lived brilliant spots on the sun’s photosphere.

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.

How big is a typical solar granule?

A typical granule has a diameter on the order of 1 500 kilometres (930 mi) and lasts 8 to 20 minutes before dissipating. At any one time the Sun’s surface is covered by about 4 million granules.

Why is the convection zone called convection?

They look very much like the cells you can see at the surface of a pot of boiling water. We call them convection cells because they are due to convection the physical mechanisms responsible for the boiling water.

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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 granules Class 9?

Nissl’s Granules are the substances found in the neurons which are a large granular type of body. These granules are very useful for protein synthesis also help to transport these proteins to the part known as cyton.

Why is the photosphere granulated quizlet?

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 cell has cytoplasmic granules?

Cytoplasmic granules are a common feature of both activated cytotoxic T lymphocytes (CTLs) and natural killer (NK) cells.

What are the granules in phagocytes?

In the blood two types of white blood cells neutrophilic leukocytes (microphages) and monocytes (macrophages) are phagocytic. Neutrophils are small granular leukocytes that quickly appear at the site of a wound and ingest bacteria.

Are phagocytes?

Phagocytes are cells that protect the body by ingesting harmful foreign particles bacteria and dead or dying cells. … The professional phagocytes include many types of white blood cells (such as neutrophils monocytes macrophages mast cells and dendritic cells).

Where are granule cells found?


term used to refer to neurons characterized by small cell bodies. Granule cells are found in various regions of the brain including the cerebellum cerebral cortex hippocampus and olfactory bulb.

How thick is the photosphere?

about 300 km thick
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.

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 kilometer per second.

What is in the chromosphere?

The Sun’s chromosphere appears as a rim of red light during a solar eclipse. … It lies below the solar corona the Sun’s upper atmosphere which extends many thousands of kilometers above the chromosphere into space. The plasma (electrically charged gas) in the chromosphere has a very low density.

What is the convection zone of the Sun?

The convection zone is the outer-most layer of the solar interior. It extends from a depth of about 200 000 km right up to the visible surface. At the base of the convection zone the temperature is about 2 000 000° C.

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What is the core of the sun called?

At the very center is the dense hot core. Around the core lie two layers: a thick layer called the radiative zone and a thinner cooler layer called the convective zone. Surrounding all of them is the sun’s surface layer known as the photosphere.

What is the Sun’s average surface temperature?

5 778 K

What are the size of the granules in the convection zone of the Sun?

about 1 000 km

Small-scale cells called granules are about 1 000 km (620 mi) in diameter and are formed by hot up-flowing gases surrounded by cooler down-flowing gases moving about 1 km/sec (2 200 mph).

Which one of the following is convective layer of the atmosphere?


While in the troposphere convective gravity waves can affect the stability and modify further convective development. In the troposphere stratosphere and mesosphere the dissipation of convective gravity waves exerts a tendency on the mean flow and thereby contributes to the momentum budget of those layers.

Which layer of the Sun is where fusion occurs?


The Sun’s interior domain includes the core the radiative layer and the convective layer (Figure 2–1). The core is the source of the Sun’s energy the site of thermonuclear fusion.

Is granules smaller than powder?

A powder has a smaller grain size and granular probably consists of bigger grains. So your surface to volume ratio will be different. You will have different behaviour of adsorption or diffusion due to the presence of pores in granules (if the granules are porous).

What is granular structure?

A granular structure is a mathematical structure of the collection of granules in which the inner structure of each granule is visible (a granule is a white box) and the interactions among granules are detected by the visible structures [19] [20] [21] [33].

What are granules in pharmaceutics?

 Granules are aggregations of fine particles of powders in a mass of about spherical shape. Definition !? 3. 1. Avoid powder segregation if the powder is composed of particles with different dimensions & different densities a separation between these particles will occur.

Physical Science 10.2c – The Structure of the Sun

What is CONVECTION CELL? What does CONVECTION CELL mean? CONVECTION CELL meaning & explanation

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