What Is The Radiative Zone Of The Sun

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What Is The Radiative Zone Of The Sun?

The radiative zone is a thick layer of highly ionized very dense gases which are under constant bombardment by the gamma rays from the core. It is about 75% hydrogen and 24% helium. Because most of the atoms here lack electrons they can’t absorb photons for convection to the surface.

What is the purpose of the radiative zone?

The layer of a star that lies just outside the core to which radiant energy is transferred from the core in the form of photons. In this layer photons bounce off other particles following fairly random paths until they enter the convection zone.

Where is radiative zone located?

The radiative zone extends outward from the outer edge of the core to the interface layer or tachocline at the base of the convection zone (from 25% of the distance to the surface to 70% of that distance). The radiative zone is characterized by the method of energy transport – radiation.

Is the radiative zone a layer of the Sun?

The inner layers are the Core Radiative Zone and Convection Zone. The outer layers are the Photosphere the Chromosphere the Transition Region and the Corona. IRIS will focus its investigation on the Chromosphere and Transition Region.

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What takes place in the Sun’s radiation zone?

The radiation zone is the site where energy transport occurs. This zone can be characterized as the place where we the photons bounce around facilitating the ability for energy to be transported to the outer surface of the Sun. The temperature at the radiation zone ranges from 2 to 7 million degrees Celsius.

How hot is the radiative zone of the Sun Celsius?

about 7 million degrees Celsius

The radiative zone is just outside the core which has a temperature of about 7 million degrees Celsius. The energy released in the core travels extremely slowly through the radiative zone.

What happens in the convective zone of the Sun?

In the convective zone the temperatures are cool enough—under 1 800 000 degrees Fahrenheit (1 000 000 degrees Kelvin)—that the atoms in the plasma there can absorb the photons coming outward from the Sun’s radiative zone. The plasma gets very hot and begins to rise upward out of the Sun.

How thick is the radiation zone of the Sun?

Core	Radius of 150 000 km	10 000 000 K
Radiative Zone	300 000 km thick	8 000 000 K
Convective Zone	200 000 km thick	500 000 K
Photosphere	500 km thick	5800 K
Chromosphere	10 000 km thick	4 000 to 400 000 K

How does the Sun’s radiative zone compared with the convective zone?

The Sun’s radiative zone extends from the core outward to about 70% of the Sun’s radius. In a smaller (than the Sun) star that is cooler than our Sun the convective zone tends to be larger extending deeper into the star’s interior. Thus the radiative zone tends to be smaller.

What does the chromosphere of the Sun do?

The layer above the photosphere is the chromosphere. The chromosphere emits a reddish glow as super-heated hydrogen burns off. But the red rim can only be seen during a total solar eclipse. … The chromosphere may play a role in conducting heat from the interior of the sun to its outermost layer the corona.

What is the chromosphere of the Sun?

chromosphere lowest layer of the Sun’s atmosphere several thousand kilometres thick located above the bright photosphere and below the extremely tenuous corona.

What percent of the sun is the radiative zone?

The radiative zone of the sun starts at about 25 percent of the radius and extends to about 70 percent of the radius. In this broad zone heat from the core cools dramatically from between seven million K to two million K. In the radiative zone energy is transferred by a process called thermal radiation.

What are the 7 layers of the sun?

It is composed of seven layers: three inner layers and four outer layers. The inner layers are the core the radiative zone and the convection zone while the outer layers are the photosphere the chromosphere the transition region and the corona.

What is the corona of the Sun?

corona outermost region of the Sun’s atmosphere consisting of plasma (hot ionized gas). It has a temperature of approximately two million kelvins and an extremely low density. The corona continually varies in size and shape as it is affected by the Sun’s magnetic field.

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How does the energy travels in the radiative zone of the Sun quizlet?

A radiation zone radiative zone or radiative region is a layer of a star’s interior where energy is primarily transported toward the exterior by means of radiative diffusion and thermal conduction rather than by convection. Energy travels through the radiation zone in the form of electromagnetic radiation as photons.

How many degrees Kelvin is the Sun?

We know that temperatures must rise to one million degrees Kelvin in order to emit x-rays. We know that the surface temperature of the sun is only 6000° Kelvin and that the temperature of the corona is over 1 000 000° Kelvin.

Is Kelvin cold or hot?

For science even Americans use Celsius and Kelvin. The second reason is that the Kelvin scale may be used to express both extremely cold and hot temperatures on the same (positive numerical value scale).

Which layer of sun is hottest?

Core
Core. The hottest part of the Sun is the core at 28 080 000°F on average.Mar 27 2009

Is radiative zone hotter than convective zone?

The most efficient means of energy transfer is now convection and we find ourselves in the region of the Sun’s interior know as the convection zone. The hotter material near the top of the radiation zone (the bottom of the convection zone) rises up and the cooler material sinks to the bottom.

What happens convective 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 convective zone made up of?

plasma
It is made out of plasma. The convective zone like the rest of the Sun is made up entirely of plasma. A plasma is a ‘gas’ that conducts electrical currents just like a wire does.

How hot is the chromosphere?

about 36 000 degrees F.
the chromosphere is the innermost atmospheric layer. It is just above the photosphere. Here the temperature begins to rise again to about 36 000 degrees F. Above the chromosphere is the transistion layer where temperatures increase 6000 to over half-a-million degrees.

What keeps the Sun from exploding or collapsing?

The inward pressure that keeps a star from exploding is the gravitational attraction of the gas mantle surrounding the core (which is most of the volume of the Sun and is very hot but does not burn itself). … If the fusion reactions in the core become too weak a star can and does collapse.

What is the radiative zone of the Sun and what does it do?

Just outside the Inner Core of the sun at a distance approximately 0.25 to 0.7 solar radii lies the Radiative Zone. This zone radiates energy through the process of photon emission and capture by the hydrogen and helium ions.

How does the Sun’s radiative zone compare with the convective zone quizlet?

How does the sun’s radiative zone compare with the convective zone? The radiative zone is hotter and closer to the sun’s core. … the movement of gases in the convective zone.

What are the 3 regions of the Sun?

Scientists who study the Sun usually divide it up into three main regions: the Sun’s interior the solar atmosphere and the visible “surface” of the Sun which lies between the interior and the atmosphere. There are three main parts to the Sun’s interior: the core the radiative zone and the convective zone.

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What is the chromosphere made up of?

The chromosphere is mainly made of hydrogen and helium plasma which is ionized to produce red visible light as seen during an eclipse.

What is photosphere chromosphere and corona?

The Sun – our central star

Beginning from the outside they are: the corona – the outermost hot shell of the atmosphere. the chromosphere – a transparent layer between the corona and the photosphere. the photosphere – the visible “surface” of the Sun.

What’s happening in the chromosphere?

NASA/Marshall Solar Physics. The chromosphere is an irregular layer above the photosphere where the temperature rises from 6000°C to about 20 000°C. At these higher temperatures hydrogen emits light that gives off a reddish color (H-alpha emission).

Is chromosphere transparent?

The chromosphere is the second most outer layer of the Sun. Due to its low density it is relatively transparent resulting in the photosphere being regarded as the visual surface of the Sun. …

Where is the chromosphere of the Sun quizlet?

Where is the chromosphere on the Sun? It is the layer above the visible surface of the Sun.

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 energy travels through the radiative zone?

A radiation zone or radiative region is a layer of a star’s interior where energy is primarily transported toward the exterior by means of radiative diffusion and thermal conduction rather than by convection. Energy travels through the radiation zone in the form of electromagnetic radiation as photons.

What is the hottest layer in the Sun’s photosphere Corona core radiative zone chromosphere convective zone?

The Transition Region

Above it is a region in the solar atmosphere where the temperature changes from 10 000 K (typical of the chromosphere) to nearly a million degrees. The hottest part of the solar atmosphere which has a temperature of a million degrees or more is called the corona.