Which of the following changes would cause the fusion rate in the Sun score 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 and A decrease in the core radius.
What would happen if the fusion rate in the core of the Sun were increased?
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 heat up and the rate of fusion would increase even more.
Why does the Sun’s rate of fusion gradually rise over billions of years causing it to brighten over time?
Why must the Sun's rate of fusion gradually rise over billions of years? Fusion reactions decrease the overall number of particles in the core, causing the core to shrink, converting gravitational potential energy into thermal energy, and increasing the rate of fusion.
How would we be able to tell if fusion reactions in the Sun were to suddenly cease?
We would be able to tell that fusion reactions had ceased because we would no longer detect neutrinos from the Sun. Neutrinos, a by-product of nuclear fusion, exit the Sun immediately.
What would happen if the fusion rate in the core of the Sun were increased but the core could not expand View Available hint S?
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 heat up and the rate of fusion would increase even more.
What would happen in the Sun if the temperature of the core decreased?
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.
What would happen if the core of the Sun become hotter?
Or, more energy means more heating, which means more energy, etc. 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.
Why does the Sun’s rate of fusion gradually rise over billions of years quizlet?
Why must the Sun's rate of fusion gradually rise over billions of years? B) Fusion reactions decrease the overall number of particles in the core, causing the core to shrink, converting gravitational potential energy into thermal energy, and increasing the rate of fusion.
What is the fusion reaction by which the Sun currently produces energy?
3) The Sun generates energy primarily by nuclear fission. 4) Nuclear power plants on Earth create energy in the same way as the Sun. 5) The corona and chromosphere are hotter than the photosphere. 6) The chromosphere is the layer of the Sun that we see as its visible surface.
How do we know fusion occurs in the Sun?
Our main evidence for this probably comes from neutrinos, elementary particles which are produced in nuclear reactions in the center of the Sun and which have been observed using detectors on Earth.
What would happen in the Sun of fusion reactions suddenly ceased quizlet?
What would happen in the Sun if fusion reactions suddenly ceased? Photons would continue diffuse from the core and radiate from the surface of the Sun for about a million of years.
Why does fusion occur in the Sun’s core?
The gravity of the Sun, which is almost 28 times that of Earth, ''traps'' hydrogen from its atmosphere and this hydrogen fuels the Sun's fusion reaction. At temperatures of 15 million degree Celcius in the Sun's core, hydrogen gas becomes plasma, the fourth state of matter.
Why does the Sun’s luminosity increases and its temperature decreases at position A?
As in the first (earlier) red-giant phase, the core collapse leads to very high rates of fusion in the surrounding shells of helium and hydrogen. The high rate of energy production causes the star's luminosity to rise, accompanied by an increase in size and decrease in surface temperature.
Why is the Sun getting hotter?
The Sun is getting hotter, adding heat to the global warming that has been linked to greenhouse gases that trap heat in the atmosphere. Solar radiation reaching the Earth is 0.036 percent warmer than it was in 1986, when the current solar cycle was beginning, said a study published on Friday in the journal Science.
What is responsible for the intense heat and pressure in the Sun’s core?
The core of the sun is so hot and there is so much pressure, nuclear fusion takes place: hydrogen is changed to helium. Nuclear fusion creates heat and photons (light). The sun's surface is about 6,000 Kelvin, which is 10,340 degrees Fahrenheit (5,726 degrees Celsius).
Which of the following best explains why the Sun’s luminosity gradually rises over billions of years quizlet?
Which of the following best explains why the Sun's luminosity gradually rises over billions of years? Fusion gradually decreases the number of independent particles in the core, allowing gravity to compress and heat the core, which in turn increases the fusion rate and the Sun's luminosity.
How does the nuclear energy production in the core of the sun compare to the energy radiated from the surface of the Sun quizlet?
How does the nuclear energy production in the core of the Sun compare to the energy radiated from surface of the Sun? The core must produce the same amount of energy as is radiated from the surface.
What causes fusion?
In a fusion reaction, two light nuclei merge to form a single heavier nucleus. The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei. The leftover mass becomes energy.
What happens when the Sun’s core temperature decreases quizlet?
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 would happen to the Sun if the temperature of the core decreased?
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.
What conditions are required for fusion to occur?
The temperature must be hot enough to allow the ions to overcome the Coulomb barrier and fuse together. This requires a temperature of at least 100 million degrees Celsius. The ions have to be confined together in close proximity to allow them to fuse.
Why does the Sun’s luminosity increase?
Since its birth 4.5 billion years ago, the Sun's luminosity has very gently increased by about 30%. This is an inevitable evolution which comes about because, as the billions of years roll by, the Sun is burning up the hydrogen in its core.
How the Sun’s size temperature and luminosity will change as it gets older?
Throughout the subsequent billions of years, the Sun's luminosity increased gradually and will continue to increase in the future. Astronomers estimate that the Sun's luminosity will increase by about 6% every billion years.
What is happening to Earth right now 2021?
Global sea level rise accelerated since 2013 to a new high in 2021, with continued ocean warming and ocean acidification. The report combines input from multiple United Nations agencies, national meteorological and hydrological services and scientific experts.
How the composition of the sun’s core will change?
Over those five billion years, the sun will go from “yellow dwarf” to “red giant.” When almost all of the hydrogen in the sun's core has been consumed, the core will contract and heat up, increasing the amount of nuclear fusion that takes place. The outer layers of the sun will expand from this extra energy.
Why is the Sun’s brightness increasing?
The helium "ashes" left behind are denser than hydrogen, so the hydrogen/helium mix in the Sun's core is very slowly becoming denser, thus raising the pressure. This causes the nuclear reactions to run a little hotter. The Sun brightens.
What is the net fusion reaction that produces energy in the core of the Sun?
In the core of the Sun hydrogen is being converted into helium. This is called nuclear fusion. It takes four hydrogen atoms to fuse into each helium atom. During the process some of the mass is converted into energy.
Which of the following best describes why the Sun emits most of the energy in the form of visible light?
Which of the following best describes why the Sun emits most of its energy in the form of visible light? Like all objects, the Sun emits thermal radiation with a spectrum that depends on its temperature, and the Sun's surface temperature is just right for emitting mostly visible light.
Where in the Sun do fusion reactions happen quizlet?
What happens in the center of the Sun? Nuclear fusion occurs – A process in which particles of an element collide and form a heavier element, such as the fusion of hydrogen into helium that occurs at the Sun's core.
Where in the Sun do fusion reactions happen?
the core of the Sun In the core of the Sun hydrogen is being converted into helium. This is called nuclear fusion. It takes four hydrogen atoms to fuse into each helium atom. During the process some of the mass is converted into energy.