We know that heavier elements form in the core of stars like our sun and even bigger. We know that the process starts out as H turning into He, but what about the others. Research and find out what elements are formed next, but more than just the order, get the BIG points by describing why. There are many elements so there's lots to choose from.
1/21/2014 08:54:27 am
Hydrogen 91.2 71.0
Mr. Casey
1/21/2014 09:46:53 pm
No idea what you posting here. The question is what gets converted into what, and why.
Kara Brown
1/22/2014 09:03:26 am
Scientists say that stars "burn" the lighter elements before "burning" the heavier elements during their lives. This is called "nucleosynthesis." It goes from hydrogen to helium. Once the star is about to end its life it collapses in on itself and the pressure becomes much greater. It starts fusing elements heavier than hydrogen. Like helium to carbon to iron, and many more. As the hydrogen starts to run out, the core shrinks and gets hotter. Helium fuses to make carbon and so forth. If it was a bigger star, even heavier elements can be made up to iron.
Mr.Casey
1/22/2014 02:10:42 pm
GREAT start Kara. Let's call the "burn" "fusion." Okay, now that we know what it is called, I want someone to tell me how a Hydrogen becomes a He and how a He becomes a C, and so on until we get to iron. What happens to the protons, neutrons, and electrons?
Jennifer Smith
1/25/2014 06:45:09 am
The elements from stars core start from hydrogen (H), then to helium (He), then carbon (C), and depending on its stars size it might grow bigger using the element of iron (Fe).
Mr. Casey
1/27/2014 01:08:20 am
Great start Jennifer. Now lets get more details! Jennifer mentioned a trend, can anyone describe element creation is different types of stars?
Raymond Cuero
1/27/2014 03:55:26 am
Some stars can get bigger by using the elements. The first step is is hydrogen, then helium, then carbon.
Mr. Casey
1/27/2014 05:48:04 am
Good point Ray, but we already have this information. What's new that you can add?
Lindsey Judd
1/28/2014 07:30:43 am
The transformation from hydrogen to helium is- the fusion of four hydrogen nuclei to make one helium nucleus. The transformation from helium to oxygen- the stars internal core collapses and heats up until its hot enough to fuse helium into larger atoms by combining three helium atoms into carbon. Then some helium will fuse with carbon to produce oxygen. This is all I have so far...
Mr. Casey
1/29/2014 02:30:42 am
Nice work Lindsey!!! This is what I'm talking about! SO, maybe you could each find out how your assigned element is created in stars? OR maybe you could continue what Lindsey has started here! Comments are closed.
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