What Is the Sun Made Of Table of Element Composition

You may know the Sun consists mainly of hydrogen and helium. Have you ever wondered what about the other elements in the Sun? About 67 chemical elements have been detected in the sun. Im sure youre not surprised that hydrogen is the most abundant element, accounting for over 90% of the atoms and over 70% of solar mass. The next most abundant element is helium, which accounts for almost just under 9% of the atoms and about 27% of the mass. There are only trace amounts of other elements, including oxygen, carbon, nitrogen, silicon, magnesium, neon, iron, and sulfur. These trace elements make up less than 0.1 percent of the mass of the Sun. Solar Structure and Composition The Sun is constantly fusing hydrogen into helium, but dont expect the ratio of hydrogen to helium to change anytime soon. The Sun is 4.5 billion years old and has converted about half of the hydrogen in its core into helium. It still has about 5 billion years before the hydrogen runs out. Meanwhile, elements heavier than helium form in the Suns core. They form in the convection zone, which is the outermost layer of the solar interior. Temperatures in this region are cool enough that the atoms have enough energy to hold their electrons. This makes the convection zone darker or more opaque, trapping heat and causing the plasma appear to boil from convection. The motion carries heat to the bottom layer of the solar atmosphere, the photosphere. Energy in the photosphere is released as light, which travels through the solar atmosphere (the chromosphere and corona) and passes into space. Light reaches the Earth about 8 minutes after it leaves the Sun. Elemental Composition of the Sun Here is a table  listing the Suns elemental composition, which we know from analysis of its spectral signature. Although the spectrum we can analyze comes from the solar photosphere and chromosphere, scientists believe it is representative of the whole Sun, except for the solar core. Element % of total atoms % of total mass Hydrogen 91.2 71.0 Helium 8.7 27.1 Oxygen 0.078 0.97 Carbon 0.043 0.40 Nitrogen 0.0088 0.096 Silicon 0.0045 0.099 Magnesium 0.0038 0.076 Neon 0.0035 0.058 Iron 0.030 0.014 Sulfur 0.015 0.040 Source:  NASA - Goddard Space Flight Center If you consult other sources, youll see the percentage values vary by up to 2% for hydrogen and helium. We cant visit the Sun to sample it directly, and even if we could, scientists would still need to estimate the concentration of elements in other portions of the star. These values are estimates based on the relative intensity of spectral lines.

Substitute Products I Consider It `` Weak `` - 1347 Words

†¢ Substitute Products: I consider it â€Å"weak† since the movie theater industry’s sales are not growing rapidly in comparison with the movie rental industry. People are substituting the movie theater experience with movies rentals, which could be watched at home at a lower cost. Moreover, people are also switching to movie rentals due to its convenience factors such as comfort, pausing the movie, inviting friends, etc. Therefore, I believe this force is the closest substitute for the movie theaters industry. †¢ Rivalry Among Competing Sellers: due to the Buyer demand for movie rentals is continuously rising, competing sellers do not have the need to share away or steal existing customers from other competitors. So rivalry among competing†¦show more content†¦Even though there are a big number of suppliers in the market, suppliers could become greedy. For instance, if the HBO (supplier) has good quality products such as the TV shows of the year or the most viewed like â€Å"Game of Thrones†, HBO could charge a big chunk for licensing its services to Netflix (buyer), which give HBO power over its buyers. If at the end, Netflix decided not to buy HBO services, another buyer like RedBox will buy the product. So RedBox may attract more customers, because the market decides what is trending. †¢ New Entrants: Since the buyer’s demand is rising quickly, and technological advances have eased the entrance for competing businesses to emerge, I considered this a â€Å"High† force. I also think, that the entry barriers are low, because companies not necessarily need to pay suppliers for the high priced licensing services. They may negotiate a royalty fee on the buyer’s annual sales, which may favor even more suppliers. Thus, I believe there are a vast number of companies that could easily compete with the existing ones, and potentially offer the same or better service. c. I believe this is an attractive industry because there is a possibility of making good profits due to buyer’s demand is daily increasing, there are low entry barriers, and technological advances are contributing to grow the industry. Although there is a high threat from potential

Are We on the Same Page free essay sample

My favorite black ink pen sprinted across the spiral notebook page, frantically attempting to keep up with the flood of thoughts seeping through my inspired mind. A meek smile nudged my cheeks as I worked through the page without hesitance, the outer surface of my cupped writing hand bloodied with the thick black ink it danced with. This is how intimate writing and I used to be. Once, a piece of paper, a pen, and a thought-saturated mind were all I needed to connect with a blank page. One word grew to a thousand effortlessly as I revealed my greatest ambitions, my underlying emotions, and my fictional twisted tales to my writing. Presently however, my relationship with writing has become immensely materialistic. A successful reunion with my writing now requires a thesaurus, plenty of erasers if pencil is in use (extra white-out if using pen), and piles of notebook paper to adhere to my crumple-and-toss mistakes; all in hopes that I can conjure a good conversation, paired with the appropriate words to describe my thoughts. We will write a custom essay sample on Are We on the Same Page? or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Needless to say, our relationship has become awkward. I find myself halting at every half-sentence due to a shortage of words to depict my ideas. The days of my pen dancing cheerfully along-side my paper have become few and far between. I’m having what some relationship therapists may refer to as a â€Å"falling out† with writing. We encounter each other when necessary, like walking past an old friend you’ve grown apart from in the school hallways. This â€Å"falling out† with writing has been the greatest academic and personal obstacle I’ve reached thus far. I carry a hope that someday we will be able to regain the friendship we once had.