This website uses cookies to ensure you have the best experience. Learn more

About The Sun Summary Essay

1097 words - 5 pages

ABOUT THE SUN
The Sun is our nearest star. Its light and heat make life on Earth possible.
When did the Sun form? 
Scientists calculate the Sun and solar system formed at approximately the same time, 4.55 billion years ago. This is based on the ages of the oldest objects that we have sampled from our solar system, meteorites.
How did the Sun form?
The solar nebula theory describes how most scientists think the Sun formed. A cloud of hydrogen and helium gas and dust existed in space. It began to compress and eventually gravitational forces pulled the gas and dust together and the cloud collapsed. The collapsing cloud began spinning and flattening into a disk. Much of the material was ...view middle of the document...

Here the energy (radiation) moves randomly from atom to atom, with some of the energy moving toward the Sun's surface.
As energy moves out of the radiative zone, it enters the convective zone. Here the atoms do not pass the energy from particle to particle; the atoms themselves move, carrying the heat with them. The hotter material near the radiative zone rises to the cooler surface of the convective zone. As it reaches the top of the convective zone, it cools and sinks.
The photosphere (“sphere of light”) is the “surface” of the Sun; because the Sun is made of gas, it does not have a solid surface. The photosphere has temperatures that reach about 5800 degrees Kelvin and is the layer that releases most of the light that reaches Earth.
The surface of the Sun has continuously changing dark regions or sunspots. The spots are dark because they are cooler than the surrounding gas (about 3230 degrees Celsius). Sunspots can persist for an hour to several months. The number of sunspots increases and decreases in an 11-year cycle, the solar cycle.
The photosphere and sadanslyng, unspots can be viewed safely with special solar telescopes, but not directly with the human eye!
The chromosphere (“sphere of color”) is a 2000-kilometer-thick layer of gas that reaches temperatures between 6000 and 50,000 degrees Celsius. Most of the energy from the chromosphere is released as red light, which means that the chromosphere can be viewed with special telescopes that filter out the other wavelengths. The chromosphere is dynamic; convection cells swirl the surface, and material shoots off the surface as flame-like features.
The corona is a thin outer layer of the Sun that is seen during a solar eclipse. The corona emits energy at many different wave lengths. Loops and arches of matter are often seen extending out from the corona along lines of the Sun's magnetic field. This material flows away from the Sun as the solar wind. Some of the particles reach Earth's atmosphere and interact with atmospheric particles to create the aurora.

What is the Sun made of?
While approximately 60 different elements make up the Sun, hydrogen accounts for about 92% of the atoms (almost three-fourths of the...

Other Essays Like About the Sun - Summary

Planet X: The Unknown Void Essay

399 words - 2 pages Museum.Another startling discovery is the discovery of a possible tenth planet. The presently named UB131 is roughly one hundred Earth distances from the Sun (approx 158,607.8 km) and has a reflective surface superior to Pluto. Since astronomers know that UB131 is not completely reflective, the planet itself may be much larger.In summary, not much is known about the theorized Planet X or if it even exists entirely. One thing is for certain however if it does, this is that one day all of humankind shall notice.Cited-----http://xfacts.com/x2.htmhttp://news.nationalgeographic.com/news/2002/10/1003_021007_quaoar.htmlhttp://www.chron.com/disp/story.mpl/nation/3288636.html

The Death Of A Star The Death Of Stars And What They Go Through And Can Become

415 words - 2 pages The life of a star depends on the stars mass. So the bigger they are the quicker they die. Opposite for smaller ones, the smaller the slower they die. Then the bigger the star the quicker it runs it's energy out.So in about 4 billion years the sun will exhaust all it's fuel. The Sun's core will collapse on itself, making a very large booming sound and wave of energy. But while the Sun uses it's energy the atmosphere will expand taking all the

Earth Sun

1765 words - 8 pages LECTURE 2 Earth-Sun Relationships and Illumination of the Globe I. Earth-Sun Relationships: Why we have to understand? Because by understanding earth-sun relationships one will be able to determine the apparent path of the sun in the sky, the angles at which sun's ray (light) strike, the lengths of day and night, and the occurence of seasons. The earth is turning on its axis at the same time that it is moving in a path about the sun

War as a Normality of Life and Politics

665 words - 3 pages is vital in averting war. He justifies his statement about a commander in chief being able to avoid war by going to great lengths, by saying strategic pursuit is the moral act of those who know horrors of battle and seek to avoid them. Espionage, a strategy which is much frowned upon in today's society, was a strategy equal to any other for Sun-Tzu, because, the most important thing is to avoid war at all costs, and one

Futility - Wilfred Owen

540 words - 3 pages The poem ‘Futility’ is a one about a fallen soldier who is moved into the sun so that he may be revived from its warmth. This act viewed from our perspective is futile or useless because the sun cannot do that further creating a tone of despair to be recognised for the readers of this poem. This tone of despair is established briefly in the first half of the first stanza. The very first line of this poem creates an initial sense of hope through

Uv Rays and the Type of Uv Rays

605 words - 3 pages People that state tanning beds are harmful are often wrong. These people often aren’t educated about UV rays and the type of UV rays in tanning beds. Saying, for instance, the UV rays cause suppression of the immune system, cataracts, skin cancer, and/or premature aging of the skin. Comparing tanning beds to the sun. But tanning beds are a lot different from the sun. UV light is typically found as part of the radiation received by the

Analysis Of The Painting, The Persistence Of Memory, By Salvador Dali

2016 words - 9 pages more value (he adds more black to the green) to the shaded part of the landscape, and more white to the grass where the sun would be shining. The same is applied for the cliff on the background, where the sun is shining the value of the color is much less than areas of the cliff that are not hit by the setting sun. This type of painting is painterly work. Dali uses value, hue and chroma with paint to construct realistic looking world which we can

"A Tale of Three Trees." This is a synopsis of the classic Christian tale

452 words - 2 pages .*The third tree: Wishes to stay where he is and grow tall so that when people look at him, they will raise their eyes to the heavens and think of God.Plot summary:"The Tale of Three Trees." Apparently it is an old Christian folktale. It is about 3 trees that each want to do something great. One tree wants to be a big boat that is fit for a king. Another wants to hold a lot of treasure. The last one wants to be the talles tree and point to GodSoon

Stars and Navigation

1127 words - 5 pages celestial navigation called Wayfaring, which means that they used information about the stars, sun, moon, planets, ocean and tradewinds to know which way to go. They built boats with a system of rungs that would line up with key stars on the horizon for the navigator to tell direction. It took many years to train a navigator. The Hawaiian Star Compass was an incredibly accurate way to navigate. By developing this navigation system, the ancient

Week 1 Sci 151

1285 words - 6 pages position in it? a. The Milky Way galaxy is where our solar system is located in the universe. b. The Milky Way galaxy is home to over 100 billion stars and the Sun is one of those stars. 3) What is the Big Bang and what does it say about the age of the universe? a. The Big Bang is when the universe began. b. The Big Bang is thought to have happened about 14 billion years ago. 4) What is meant by the phase “looking out in the universe is

English Letter

575 words - 3 pages Dear Sir/Madam I am writing to complain about the dreadful article published by the Sun named ‘One dead in New Year shootout’; released on 1st January 2010. Firstly, I was absolutely horrified by the content of this article. It not only camouflaged the truth, but totally sensationalised the fact that there was shooting, involving black person. I have read both the Sun article and the Family Press Release, which was written in response to the

Related Papers

A Stellar View Our Sightly Sun Visor Tips

620 words - 3 pages pages of old Hollywood. Talk about a sun visor that's the cat's meow of sun protection element! Following our sun visor recommendations is a surefire strategy to place the entertaining back into days inside the sun! automatic cane juicer price in india ultra grinder and coconut scraper and online shopping

Relationship Between The Earth And The Sun

977 words - 4 pages The relationship between the earth and the sun With a radius 110 times that of Earth and a mass 330,000 times greater, the sun reigns as the center of the solar system. The gravitational pull of the fierce, stormy ball of gas holds earth orbit, and its emissions power the Earth-atmosphere systems on which our lives depend. As the source of almost all the energy in our world, it holds the key to many of our questions about Earth and sky

Comprehenseive Problem Finance Essay

1780 words - 8 pages those tools, one can answer many questions about the corporation’s financial health. This paper will use those financial analysis tools to exhibit Sun Microsystems annual percentage change in net income; compute net income/net sales for each year; ratio of the major income statements accounts to net revenue; compute return on stockholders’ equity; average stock prices for each of the four years; and compute the ratio of price to book value for each

Relationship Between Earth, Son And Moon

528 words - 3 pages Relationship between Earth, Sun and Moon The universe goes on and on forever and ever and there’s no point trying to understand and know everything about it. However something inside the universe we should all understand is the relationship between the Earth, Sun and Moon. The first thing to know is the orbiting habits. The Earth orbits around the Sun in an elliptical fashion. This orbit takes 365 days (one year). As the Earth orbits the sun