0
As a G-type star fuses its hydrogen to helium, this helium will gather in the core. As a result, the core will contract under its own weight as hydrogen is being spent. The contraction causes an increased hydrogen fusion rate, increasing the temperature. When insufficient hydrogen remains in the core, the layers above are no longer supported by the outward pressure of radiation, and collapse on top of the core, causing it to contract further, and also initiating hydrogen fusion outside the core. At this point, the star leaves the main sequence, and becomes a red giant. At this stage, the core of the giant may reach critical density for helium fusion to initiate. Since the core is composed of mostly degenerate matter at this stage, there is no regulation of the fusion rate. Also, degenerate matter is less opaque to the energies produced than non-degenerate matter, so conducts them better.
Ehr, to summarize: the helium flash occurs during the red giant stage of G-type stars.
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoWhen the star becomes a "Red giant" is when the helium flash occurs.
Add your answer:
Earn +20 pts
The helium flash converts helium nuclei into?
carbon
How long does Helium Flash in Stars Solar Masses last?
The helium flash only last for a couple of minutes.
Why will a helium flash never occur in some stars?
Some stars do not develop degenerate helium cores.
What is helium flash?
A helium flash occurs because the core of the star is in what is known as a "degenerate" state. This means that the core has contracted so much that the pressure of the electron shells of the atoms making up the core prevent the core from contracting further. Under normal gas conditions (i.e. NOT a degenerate state), an increase in the temperature of the core would cause an increase in core pressure resulting in the core expanding and the temperature then dropping. This state is known as hydrostatic equilibrium. With a degenerate core, the temperature increases but the pressure doesn't. This extra energy ignites the helium creating run-away nuclear reactions. This is what is referred to as a "helium flash."
What type of erosion occurs in a Llano uplift?
Flash-flooding
A flood that occurs within a few hours of heavy rain?
That would be called a flash flood.
What happens after a helium flash?
The luminosity of a low mass star goes down after helium flash. The sudden onset of helium fusion stops core shrinkage and the low-mass star will become smaller, and less luminous than it was as a red giant.
What is a flood that occurs within a few hours of rain?
A flash flood
What is a flood that occurs with a few hours of heavy rain?
A flash flood.
What is an evolution game?
a game where your creature changes/evolves throughout the game, famous evolution games are, evolution the game of life, spore, dark-spore(coming soon) and also two free flash games, monster evolution and bug evolution (but the last two defiantly aren't as good).
How can you determine if a balloon is filled with helium gas or hydrogen gas?
Fill two balloons. One with hydrogen gas and the other with helium gas. Allow them to float on a piece of string. Taking a lighted/burning taper/splinter. , and burst the two balloons with the burning splinter. The helium filled balloon will just 'pop' and fall to the ground. The hydrogen filled balloon will 'pop with a flash of flame' So helium ; NO Flame Hydrogen ; A FLASH of FLAME.
What element is colorless gas and used in balloons?
'Helium' because it is also an INERT (Noble) gas. Hydrogen could be used to make the balloon float/rise, but hydrogen is a flammable gas. On explosion you will have a flash of flame.
