Which is most likely why many scientists reject the cold fusion theory? There is too much waste involved in the process. Cold fusion experiments have been conducted at room temperature only. The process does not produce enough energy to meet the needs of modern humans.
Why is it important for scientist to replicate each others experiments?
When studies are replicated and achieve the same or similar results as the original study, it gives greater validity to the findings. If a researcher can replicate a study’s results, it means that it is more likely that those results can be generalized to the larger population.
What is a characteristic of nuclear fusion but not nuclear fission?
Both fission and fusion are nuclear reactions that produce energy, but the applications are not the same. 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.
Which statement is true about nuclear fusion quizlet?
Terms in this set (5)
Which statement is true about nuclear fusion? It produces nearly all the elements that are heavier than helium.
Which best describes nuclear fusion?
Nuclear fusion is a kind of nuclear reaction in which two lighter nuclei combine under suitable conditions to form heavier nuclei under suitable conditions. … Hence, the heavier nuclei have greater binding energy than the lighter nuclei. This difference in binding energy is released during the nuclear fusion process.
Why are experiments three times?
Repeating Experiments
Three repeats of an experiment is generally considered the minimum. Why? There are two reasons, the first has to do with the fact that three repeats ensures a two-thirds (66%) probability that the averaged results are more accurate than a single experiment.
What are the benefits of repeated trials?
When we do experiments it’s a good idea to do multiple trials, that is, do the same experiment lots of times. When we do multiple trials of the same experiment, we can make sure that our results are consistent and not altered by random events. Multiple trials can be done at one time.
Which is powerful reaction nuclear fission or fusion?
Fusion is the fusing of two or more lighter atoms into a larger one. … The energy released by fission is a million times greater than that released in chemical reactions, but lower than the energy released by nuclear fusion. The energy released by fusion is three to four times greater than the energy released by fission.
Which condition in a nebula would prevent nuclear fusion?
Answer Expert Verified. A decrease in the overall volume of gases namely hydrogen would prevent nuclear fusion in a nebula.
Which is more powerful fission or fusion?
Fusion occurs when two atoms slam together to form a heavier atom, like when two hydrogen atoms fuse to form one helium atom. This is the same process that powers the sun and creates huge amounts of energy”several times greater than fission.
What statement is true about nuclear fusion?
Which statement is true about nuclear fusion? It is caused by the same process that causes nuclear fission. It does not occur naturally in the solar system. It has very low activation energy.
What are the events involved in nuclear fusion?
Nuclear Fusion reactions power the Sun and other stars. 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.
Does nuclear fusion give off radiation?
Nuclear fission power plants have the disadvantage of generating unstable nuclei; some of these are radioactive for millions of years. Fusion on the other hand does not create any long-lived radioactive nuclear waste.
How safe is nuclear fusion?
The fusion process is inherently safe. In a fusion reactor, there will only be a limited amount of fuel (less than four grams) at any given moment. The reaction relies on a continuous input of fuel; if there is any perturbation in this process and the reaction ceases immediately.
Is nuclear fusion difficult to control?
Because fusion requires such extreme conditions, “if something goes wrong, then it stops. No heat lingers after the fact.” With fission, uranium is split apart, so the atoms are radioactive and generate heat, even when the fission ends. Despite its many benefits, however, fusion power is an arduous source to achieve.
Do we have cold fusion?
There is currently no accepted theoretical model that would allow cold fusion to occur. In 1989, two electrochemists, Martin Fleischmann and Stanley Pons, reported that their apparatus had produced anomalous heat (“excess heat”) of a magnitude they asserted would defy explanation except in terms of nuclear processes.