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If the core temp of a star decreases what happens to the radius?
If the core temperature of a star decreases, it will contract, causing the core to become denser. This contraction may lead to an increase in temperature in the outer layers, causing the star to expand its radius to re-establish equilibrium.
What is the critical temperature the core must reach for a star to shine by fusion?
The critical temperature for nuclear fusion in a star's core is around 10 million degrees Celsius. At this temperature, hydrogen nuclei can overcome their mutual repulsion and fuse to form helium, releasing energy in the process. This energy production is what causes a star to shine.
When does stellar nucleosynthesis start in a star?
When the temperature in the core reaches 10 million degrees Kelvin.
What is the temperature of an expanding star?
The temperature of an expanding star can vary depending on its size and stage of evolution. Generally, as a star expands, its surface temperature decreases due to the increased surface area over which the energy is distributed. However, the core temperature of the star can increase as it undergoes fusion reactions.
What makes a high mass star's core collapse?
A high mass star's core collapses when nuclear fusion ceases and gravitational pressure overwhelms the radiation pressure supporting the core. This collapse leads to a rapid increase in temperature and pressure, triggering a supernova explosion.
At what temperature does a star's core reach Carbon detonation?
Temperatures in the star's core can reach 3x109 K.
What determines the temperature in the core of a star?
The star's mass determines the temperature in its core. A stars mass will also determined it size and the amount of gravitational pull it will have.
What is the temperature of the core of a neutron star?
Depends on the age of the neutron star. As a neutron star no longer has any method to produce heat, it will slowly cool over time. A young neutron star will have a core temperature of about 106 kelvin.
Why the temperature of the stars vary from one another?
The temperature in the core of a star depends, to a great extent, on:* The star's mass. The general tendency is that high-mass stars are hotter. * Where the star is in its life cycle. The star's core temperature will vary over time. On the other hand, the star's surface temperature also depends on its size. Thus, it is possible that PRECISELY because a star is hotter in the core, it gets bigger, and the surface temperature DECREASES (though its total energy output increases).
Which part of a star can reach a temperature of a millions of degrees?
The core.
If the core temp of a star decreases what happens to the radius?
If the core temperature of a star decreases, it will contract, causing the core to become denser. This contraction may lead to an increase in temperature in the outer layers, causing the star to expand its radius to re-establish equilibrium.
What temperature does a star start to fuse hydrogen?
The temperature at which hydrogen fuses is 10,000,000 degrees Kelvin. This is the minimum temperature the core of a proto star has to have to become a true star.
Which star's surface temperature is closest to the temperature at the boundary between earth's mantle and core?
The star with a surface temperature closest to the boundary between Earth's mantle and core would be the Sun, with a surface temperature of about 5,500 degrees Celsius. The temperature at the boundary between Earth's mantle and core is estimated to be around 3,000-4,000 degrees Celsius.
Does a star colors depends on core temperature?
actually, it depends on the color of it's chromosphere. as you get deeper into a star, it may change color due to it's temperature, but what you see on the outside would be a different color. The chromosphere would hide the inner core of the star.
In which part of a newborn star does the fusion reactio occur?
In a newborn star, the fusion reactions occur primarily in its core, where the temperature and pressure are high enough to trigger nuclear fusion. This process generates the energy that powers the star and allows it to shine bright.
What makes dwarf stars and giant stars hot or cold?
Basically, the amount of hydrogen (mass). The more mass a star has, the greater the pressure in the core. The greater the pressures in the core, the higher the temperature, the higher the temperature, the hotter the star will be, the hotter the star, the blighter the envelope will be.
What causes the star temperature to increase?
The temperature of a star increases when nuclear fusion reactions in its core release energy. As more hydrogen is converted into helium through fusion, the core becomes hotter due to the increased energy released. This increase in temperature leads to the star shining brighter and hotter.
