What is the meaning of radiative zone?
[ rā′dē-ə-tĭv ] 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.
What does the radiative zone of the Sun mean?
The Sun’s radiative zone is the section of the solar interior between the innermost core and the outer convective zone. In the radiative zone, energy generated by nuclear fusion in the core moves outward as electromagnetic radiation. In other words, the energy is conveyed by photons.
Where is a radiation 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.
Why is it called the radiation zone?
Moving outward, next comes the radiative (or radiation) zone. Its name is derived from the way energy is carried outward through this layer, carried by photons as thermal radiation.
What is the function of the radiative zone?
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.
What is the temperature of the radiative zone?
Radiative zone temperatures Outside the sun’s core lies the radiative zone where temperatures range from 12 million degrees F (7 million degrees C) nearest the core to around 4 million degrees F (2 million degrees C) in the outer radiative zone, according to the educational website Study.com.
How does the radiative zone of the Sun spin?
Thus, the rotation velocity changes sharply at the top of the radiative zone. There the outer parts of the radiative interior, which rotates at one speed, meet the overlying convection zone, which spins faster in its equatorial middle.
What is the temperature of the radiative zone of the Sun?
What is the radiative zone made of?
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. Most photons just bounce around.
Why is the radiation zone important?
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.
What is the radiative zone of the Sun for kids?
Radiative zone: This zone is between the core and the convective zone and is roughly 70 percent of the Sun’s radius. Energy produced through nuclear fusion in the core moves steadily outwards as electromagnetic radiation, taking over 170,000 years to pass through the radiative zone.
What is the temperature of the radiative zone in 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 radiative zone of the Sun?
In the radiative zone, energy generated by nuclear fusion in the core moves outward as electromagnetic radiation. In other words, the energy is conveyed by photons . When the energy reaches the top of the radiative zone, it begins to move in a different fashion in the convective zone.
What is the radiative zone of a star?
ra·di·a·tive zone. (rā′dē-ə-tĭv) The layer of a star, especially the sun, that lies just outside the core, where energy is transferred by means of radiation. In this layer, photons travel around in random movements until they enter the convection zone.
What is the difference between convective and radiative zone?
In the radiative zone, energy generated by nuclear fusion in the core moves outward as electromagnetic radiation. In other words, the energy is conveyed by photons. When the energy reaches the top of the radiative zone, it begins to move in a different fashion in the convective zone.
What is the radiation zone and why is it important?
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.