What happens when a star exhaust its core hydrogen supply quizlet?

What happens when a star exhausts its core hydrogen supply? Its core contracts, but its outer layers expand and the star becomes bigger and brighter. cooler and brighter.

What happens when all of the available hydrogen in the core of a star is fused to helium?

Explanation: When all the hydrogen is converted to helium the Star rearranges itself, its core shrinks and its outer layers expand, depending on its initial mass the Star then transforms into a giant or a super-giant.

What happens when a main sequence star first runs out of hydrogen in its core?

As the main sequence star glows, hydrogen in its core is converted into helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts.

Why does a star grow larger after an exhaust its core hydrogen?

Hydrogen fusion in a shell outside the core generates enough thermal pressure to push the upper layers outward. Why does a star grow larger after it exhausts its core hydrogen? The core quickly heats up and expands. During which stage is the star’s energy supplied by gravitational contraction?

What happens when a star about the size of the sun exhausts its core hydrogen supply?

When a star around the size of our sun runs out of hydrogen at its core and starts to collapse, the gravitational energy causes the core to heat up again, just like it did when it was a protostar. At this stage in its life, the star is known as a Red Giant.

What happens to the core of a star after the planetary nebula stage quizlet?

what happens to the core of a star after a planetary nebula occurs? become a white dwarf. When this happens, the star explodes as a supernova.

Which of the following will likely to happen when most of the hydrogen in the core is fused into helium in the stellar core?

Once a star has converted all the hydrogen in its core into helium, the core is no longer able to support itself and begins to collapse. It heats up and becomes hot enough for hydrogen in a shell outside the core to start fusion. The core continues to collapse and the outer layers of the star expand.

What will happen if a low massive main sequence star runs out of hydrogen?

When a main sequence star begins to run out of hydrogen fuel, the star becomes a red giant or a red super giant. THE DEATH OF A LOW OR MEDIUM MASS STAR After a low or medium mass or star has become a red giant the outer parts grow bigger and drift into space, forming a cloud of gas called a planetary nebula.

What happens when a star like the Sun exhausts its core hydrogen?

What happens when a star like the sun exhausts its core hydrogen supply? Its core contracts, but its outer layers expand and the star becomes bigger and brighter.

When a star exhausts its core fusion fuel so that the core begins to contract Which of the following can stop the contraction?

When as star exhausts a fuel for fusion in its core, the core will no longer be in energy balance and therefore will contract either until it becomes hot enough to ignite fusion of another element or its contraction is stopped by degeneracy pressure. You just studied 33 terms!

What happens to the core of a star after a planetary nebula?

How does hydrogen fusion in a high mass star differ from hydrogen fusion in a low mass star?

High mass stars go through a similar process to low mass stars in the beginning, except that it all happens much faster. They have a hydrogen fusion core, but much of the hydrogen fusion happens via the CNO cycle.

What happens to a star after it exhausts its core?

A star remains on the main sequence as long as there is hydrogen in its core that it can fuse into helium. Eventually the hydrogen fuel in the core runs out and fusion stops, shutting off the outward radiation pressure. What happens to a star after it exhausts its core hydrogen quizlet?

What happens when a star uses up all of its hydrogen?

(1) When a star exhausts the hydrogen in its core, it becomes a giant or supergiant. Once a star has used up all the hydrogen in its core, fusion of hydrogen into helium stops. The core starts to contract again (just as it contracted as a protostar, before hydrogen fusion began).

What happens when a red giant star exhausts its fuel?

When a red giant star exhausts its core hydrogen fuel, the core contracts but the star expands as a whole. However, the shell of hydrogen outside the core heats up to very high temperatures (hotter than the core during the main-sequence phase), and hydrogen fusion is occurring quickly.

When the core of a star shrinks after hydrogen fusion stops?

When the core of a star shrinks after hydrogen fusion stops – the core cools and the star expands. Which of the following nuclear fuels does a one star use over the course of its entire evolution- hydrogen. Which star spends the longest time in the Protostellar phase of life?