How hot is the radiative zone?Space and Astronomy
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.
Which layer is the radiation zone?
In the Sun, the region between the solar core at 0.2 of the Sun’s radius and the outer convection zone at 0.71 of the Sun’s radius is referred to as the radiation zone, although the core is also a radiative region.
What is 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.
How thick is the convective zone of the Sun?
about 200,000 km
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.
What is the radiative zone made out 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.
How big is the radiative zone?
about 0.7 radii
Radiative Zone: The radiative zone of the Sun starts at the edge of the core of the Sun (0.2 solar radii), and extends up to about 0.7 radii.
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.
How thick is the corona?
5,000,000 km thick
|Core||Radius of 150,000 km||10,000,000 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|
|Corona||5,000,000 km thick||1,000,000 K|
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.
How do you know if you are in the radiation zone?
If you see a mushroom cloud from an atomic bomb, you’re supposed to stick your arm out and hold your thumb over the cloud. If the cloud is bigger than your thumb, you’re in the radiation zone and should evacuate.
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 in nuclear fallout?
Radioactive material from the nuclear device mixes with the vaporized material in the mushroom cloud. As this vaporized radioactive material cools, it becomes condensed and forms particles, such as dust. The condensed radioactive material then falls back to the earth; this is what is known as fallout.
Who nuked Japan?
the United States
In August of 1945, the United States was still fighting in World War II against the nation of Japan. Having been told about the successful Trinity Test of an atomic bomb, President Truman decided to drop an atomic bomb on Japan on August 6, 1945.
Can you shoot down a nuke?
Short answer: It’s very unlikely. As you read above, causing a nuclear bomb to detonate requires a precise orchestration of events, without which the chain reaction does not initiate and the bomb doesn’t detonate.
How many nukes would it take to destroy the world?
The declassified study from the scientists at the Los Alamos laboratory, published in 1947 had first shed light on the question that how many nuclear bombs it would take to destroy the world. According to the study, it would take about ten to a hundred ‘super nukes’ to end humanity, a publication reported.
Which US cities would be nuked?
Dr. Redlener identified six cities that have the greatest likelihood of being attacked: New York, Chicago, Washington D.C., Los Angeles, San Francisco, and Houston.
Can a nuke wipe out a country?
As Russia attacks Ukraine, experts described what would happen in a nuclear strike, which is unlikely. A modern-day nuclear bomb could wipe out an entire city and cause third-degree burns nearby it. But the strength of a blast depends on the size of the bomb and how it’s detonated.
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