0
What are some nuclear reactions that occur to produce heat and light on the sun?
Wiki User
∙ 10y ago
The reactions that take place on the sun are nuclear fusion reactions. Stars are, after all, giant nuclear fusion engines. On our neighborhood star, hydrogen is being fused into helium in the proton-proton chain. In this reaction, two protons are fused and one of them undergoes a beta decay to become a neutron, producing deuterium. There are a couple of different ways the fusion reactions can go from there, but helium eventually results. The process by which stars "run" is called stellar nucleosynthesis, and you can use the links below to investigate further.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoThe nuclear fusion of Hydrogen to Helium. First, 2 protons from a hydrogen atom become a deuteron. A positron (think of a anti-electron) and a neutrino are produced, too. Next, the deuteron fuses with a proton into helium-3 (3He). a photon, which is a particle of light, is also produced. Finally, 2 of the 3He atoms (including the one from step 2) fuse into helium-4 (4He). it also throws off 2 extra protons, and LOTS of energy.
Wiki User
∙ 12y agoHydrogen nuclei (four protons) in the Sun's core fuse together to make helium (two protons and two neutrons, with the weak interaction causing the conversion of two protons into neutrons). The mass deficit resulting is represented as energy and is released to contribute to the ongoing reaction and to generate radiation that is manifest as light, heat, and other forms of radiation. This process proceeds at an enormous rate, consuming about 4 million metric tons of hydrogen per second, and producing almost 4 x 1026 joules per second (watts).
Wiki User
∙ 9y agoOnly inside the core, the temperature and pressure are both too low elsewhere.
Wiki User
∙ 10y agothings
Add your answer:
Earn +20 pts
Why does the sun emit heat and light?
The heat and light emitted from the sun comes from the nuclear reactions that occur on it.
Does the Calvin cycle only occur in the dark?
It cannot occur in the dark. It contains an enzyme called rubisco which is a light-activated enzyme. Also the Calvin cycle uses the chemical energy produced in the light reactions, and the light reactions need sunlight energy in order to produce the energy needed in the Calvin cycle. Hope that helps :)
What types of reactions occur in a star?
The nuclear reaction that happens in a star is called fusion. A star's energy comes from this atomic reaction. This is what makes stars extremely hot and bright.
At 15.6 million degrees Celsius the temperature of the Suns core is high enough for nuclear what to occur?
For nuclear fusion.
Are stars radioactive?
Yes. Stars prouduce light as a product of nuclear fusion.
Why does the sun emit heat and light?
The heat and light emitted from the sun comes from the nuclear reactions that occur on it.
Fusion reactions on the sun?
yes nuclear fusion does occur on the sun, creating intense heat and light
What are light independent and dependent reactions?
Light dependent reactions are reactions the capture light energy and convert it into chemical energy(ATP). It occur in the chloroplast of plant cells Light independent reactions are reactions capture energy and use it to produce food . It does not need sunlight
What Will Most Likely Happen To a Plant That Does Not Does Not Receive Any Water?
The light-dependent reactions will not occur.
What is the difference between the light dependent reactions and the light independent reactions?
light dependent reactions only occur in light this means thier reations increases with light intensity while light independent can occur in the dark
Spontaneous nuclear fission processes occur by?
chain reactions
What light-independent reactions do plants produce?
The light-independent reactions occur in the storm of the chloroplast. The light- independent reactions are "independent" from light so they can happen else where. The light-dependent reactions happen in the thylakoid membrane of the chloroplast where the light is absorbed, and the reactions depend on the light.
In what organelle do light reactions occur in plants?
Both light and dark reactions occur in the chloroplasts of cells. More specifically light reactions take places in the thylakoid, dark in the stroma.
Where do the light reactions occur in the leaf?
Chloroplasts
How are the dark reactions that occur in plants dependent on the light-reactions?
The dark reactions that occur in plants are dependent on the light reactions because the dark reactions need ATP and NADPH. ATP and NADPH are energy molecules that dark reactions need to do their job.
How are the dark reactions that occur in plants dependent on the light reactions?
The dark reactions that occur in plants are dependent on the light reactions because the dark reactions need ATP and NADPH. ATP and NADPH are energy molecules that dark reactions need to do their job.
How are light reactions and dark reactions similar and different?
Differences: >light reactions occur in the thykaloid membranes, but dark occur in stroma >light reactions are light dependent, or they need light to take place, whereas dark reactions don't > dark reactions use the products of the light reactions >light reactions are the first step of photosynthesis and dark reactions are the second step Similarities: >both in photosynthesis Thats really the only similarity!!! hope this helps :)
