What Would Happen If The Fusion Rate In The Core Increased But The Core Could Not Expand?

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What Would Happen If The Fusion Rate In The Core Increased But The Core Could Not Expand??

What would happen if the fusion rate in the core of the Sun were increased but the core could not expand? The Sun’s core would start to cool down and the rate of fusion would decrease.

Which of the following changes would cause the fusion rate in the Sun’s core to increase ?’?

Which of the following changes would cause the fusion rate in the Sun’s core to increase? An increase in the core temperature increases the fusion rate because the fusion rate is very sensitive to temperature.

What would happen in the Sun if the temperature of the core decreased *?

If the Sun’s core suddenly shrank a little bit what would happen in the Sun? The core would heat up fusion rates would increase the core would re-expand. Why does the Sun emit neutrinos? Fusion in the Sun’s core creates neutrinos.

What would happen in the Sun if fusion reactions suddenly ceased quizlet?

If nuclear fusion reactions at the core of the Sun mysteriously ‘suddenly stopped entirely’ the overlying (mostly hydrogen) layers would fall toward the core due to decreased radiation pressure. The diameter would decrease.

How does energy generated by fusion makes its way to the Sun’s surface How long does it take?

Describe the processes by which energy generated by fusion makes its way to the Sun’s surface. Most of the Sun’s energy starts in the core. It then takes hundreds of thousands of years for the energy exit as has to travel a long way to the surface. The energy goes from the core to the radiation zone as photons.

What would happen if the rate of fusion reactions in the Sun increased?

If the fusion rate initially increases then the core expands. If the fusion rate initially decreases then the core contracts.

What happens when a star’s core runs out of hydrogen and why does this occur?

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. The outer shell of the star which is still mostly hydrogen starts to expand. As it expands it cools and glows red.

What would happen if the core of the sun get hotter?

But let’s look at what happens if the core of the Sun should for some unexplained reason get a bit hotter. In that case indeed the reaction rate would increase and release more energy but at the same time the heat would cause an increase in pressure.

What happens when the rate of fusion decreases?

This expansion also decreases the temperature at the core and the fusion reaction rate will decrease. Furthermore if the reaction rate of fusion is overly attenuated the force of gravity will become dominant and the Sun will compress and shrink.

What happens if too much energy is generated in the core of the sun?

All of the energy the Sun radiates is created in the core. The energy that the core produces every second from 4.5 million tons (4 million metric tons) of matter raises its temperature to a spectacular 25 000 000° F (14 000 000° C).
…
Structure.

Feature	% of radius
Chromosphere	2%
Corona	At least 500%

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What would happen if fusion in the Sun stopped?

As the Sun enters its Red Giant phase the outer layers will slowly lose their gravitational attraction to the core. This will cause two important processes to occur. … Without nuclear fusion in the Sun’s core the Sun essentially becomes useless to us. We will no longer have a source of energy to power our planet.

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 energy in the Sun’s convection zone?

What happens to energy in the Sun’s convection zone? Energy is transported outward by the rising of hot plasma and sinking of cooler plasma. … We are seeing hot gas rising and cool gas falling due to the convection that occurs beneath the surface.

How does fusion work in the Sun?

Inside the Sun this process begins with protons (which is simply a lone hydrogen nucleus) and through a series of steps these protons fuse together and are turned into helium. This fusion process occurs inside the core of the Sun and the transformation results in a release of energy that keeps the sun hot.

What happens during the entire fusion process in the Sun?

Fusion is the process that powers the sun and the stars. It is the reaction in which two atoms of hydrogen combine together or fuse to form an atom of helium. In the process some of the mass of the hydrogen is converted into energy.

What happens in sun fission or fusion?

Fusion is what powers the sun. … Fission is the splitting of a heavy unstable nucleus into two lighter nuclei and fusion is the process where two light nuclei combine together releasing vast amounts of energy.

Why does fusion occur in the Sun’s core?

The Sun’s gravitational force confines the positively-charged hydrogen nuclei and work with the high temperatures that cause the nuclei to move around furiously collide at high speeds overcoming the natural electrostatic repulsion that exists between the positive charges and fuse to form the heavier helium.

What fusion reaction occurs in the Sun?

nuclear fusion
The type of nuclear reaction taking place in the core of the Sun is known as nuclear fusion and involves hydrogen nuclei combining together to form helium. In the process a small amount of mass (just under one per cent) is released as energy and this makes its way to the Sun’s surface before beaming out into space.

What would happen if the Sun’s core temperature rose slightly?

What would happen to the core of the sun if its temperature rose slightly? … The rate at which fusion occurs would increase leading to an expansion of the core which would in turn cause the temperature to drop back down.

What happens after hydrogen fusion ceases in the core of a star?

When hydrogen fusion ceases in the core of a star both the core and the outer layers are no longer in equilibrium. … Once core hydrogen fusion ceases the star will not regain equilibrium until: helium core fusion begins.

What happens to nuclear fusion when the hydrogen in a star’s core runs low?

When the core hydrogen is used up and no more nuclear fusion occurs the star’s outer stellar layers expand and the core shrinks. At this point the star becomes a Subgiant Star .

What happens to a star’s core as the hydrogen there is used up?

Once a star has exhausted its supply of hydrogen in its core leaving nothing but helium the outward force created by fusion starts to decrease and the star can no longer maintain equilibrium. The force of gravity becomes greater than the force from internal pressure and the star begins to collapse.

What would happen if the Earth’s core went cold?

If the core were to cool completely the planet would grow cold and dead. … Cooling also could cost us the magnetic shield around the planet created by heat from the core. This shield protects Earth from cosmic radiation. The shield is created by a convection process caused by constantly moving iron.

What would happen if the core of the earth exploded?

When the molten outer core cools and becomes solid a very long time in the future the Earth’s magnetic field will disappear. When that happens compasses will stop pointing north birds will not know where to fly when they migrate and the Earth’s atmosphere will disappear.

Did you ever wonder why the core of the earth still hot?

There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted which has not yet been lost (2) frictional heating caused by denser core material sinking to the center of the planet and (3) heat from the decay of radioactive elements.

What would happen inside the Sun if a slight decrease in core temperature led to a sudden decline in fusion energy?

The Sun would blow up like a hydrogen bomb. The solar thermostat keeps burning rate steady. Decline in core temperature causes fusion rate to drop so core contracts and heats up. Rise in core temperature causes fusion rate to rise so core expands and cools down.

What happens in the Sun’s core?

Welcome to the core

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The core of the Sun is home to billions and billions of atoms of hydrogen the lightest element in the universe. The immense pressure and heat pushes these atoms so close to one another that they squish together to create new heavier atoms. This is called nuclear fusion.

What would happen if the Sun’s core suddenly shrank a little bit?

Every second the Sun converts about 600 million tons of hydrogen into 596 million tons of helium. … If the Sun’s core suddenly shrank a little bit what would happen in the Sun? The core would heat up fusion rates would increase the core would re-expand.

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

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.

What 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 happens when the Sun runs out of energy?

When our Sun runs out of hydrogen fuel in the core it will contract and heat up to a sufficient degree that helium fusion can begin. … It will end composed of carbon and oxygen with the lighter (outer) hydrogen and helium layers blown off. This occurs for all stars between about 40% and 800% the Sun’s mass.

What would happen if the nuclear reactions in the core of the Sun were to cease stopped )?

Since certain fraction mass that was being converted to energy due to these nuclear reactions stopping the reactions would reduce the rate of loss and mass and therefore mass will be become constant.

What would happen to Earth if the Sun’s radiation suddenly increased?

Astronomers estimate that the Sun’s luminosity will increase by about 6% every billion years. This increase might seem slight but it will render Earth inhospitable to life in about 1.1 billion years. The planet will be too hot to support life.

When fusion stops in the Sun it will contract to become a?

When the Sun runs out of hydrogen fuel in its core and fusion stops it will begin its journey to the red giant branch. The Sun will contract heat up until a shell of hydrogen is fusing around the helium core and become cooler ~3000K reddish in color and more luminous – in excess of 500 solar luminosities.