top-rated free essay

College Uneducation

By maitim Feb 26, 2014 734 Words
1. An atmosphere (New Latin atmosphaera, created in the 17th century from Greek ?tµ?? [atmos] "vapor"[1] and sfa??a [sphaira] "sphere"[2]) is a layer of gases surrounding a planet or other material body of sufficient mass[3] that is held in place by the gravity of the body. An atmosphere is more likely to be retained if the gravity is high and the atmosphere's temperature is low. Earth's atmosphere, which contains oxygen used by most organisms for respiration and carbon dioxide used by plants, algae and cyanobacteria for photosynthesis, also protects living organisms from genetic damage by solar ultraviolet radiation. Its current composition is the product of billions of years of biochemical modification of the paleoatmosphere by living organisms. The term stellar atmosphere describes the outer region of a star, and typically includes the portion starting from the opaque photosphere outwards. Stars with sufficiently low temperatures may form compound molecules in their outer atmosphere.

2. The atmosphere is divided into five layers.* It is thickest near the surface andthins out with height until it eventually merges with space. The layers fromlowest to highest : - The Troposphere (up to 10 km) It's the atmosphere thatsurrounds us. On top of that comes... - The Stratosphere; (10-50 km) Verylittle oxygen or water vapor. Aircraft fly in the lower stratosphere. This isalso where the ozone layer exists. On top of that comes.. - The Mesosphere;(50-80 km) This is where most meteors burn up, because the density is higherthan the outer layers. On top of that comes.. - The Thermosphere; (80-650 km)Practically a vacuum. Includes the ionosphere (auroras) as well as space stationorbits. On top of that comes... - The Exosphere (500-2000 km ) The farthest anyof Earth's atmosphere exists.Based on charged particles and not necessarily gasmolecules, some atmospheric models combine the Exosphere into the Thermosphere,making the outermost layer the Magnetosphere, a vast region where atmosphericions interact with the solar wind in space.* Names of 11 defined layers, some of which comingle with the basic 5. The names of these levels are Troposphere,Tropopause (upper boundary), Ozone Layer, Stratosphere, Stratopause (upperboundary), Mesosphere, Mesopause (upper boundary), Thermosphere (andIonosphere), Thermopause (upper boundary), Exobase (lower boundary), Exosphere.

3. Layers of the Atmosphere:
The earth is surrounded by the atmosphere, which is the body of air or gasses that protects the planet and enables life. Most of our atmosphere is located close to the earth's surface where it is most dense. The air of our planet is 79% nitrogen and just under 21% oxygen; the small amount remaining is composed of carbon dioxide and other gasses. There are five distinct layers of the earth. Let's look at each, from closest to farthest from the earth... Troposphere:

The layer of the atmosphere closest to the earth is the troposphere. This layer is where weather occurs. It begins at the surface of the earth and extends out to about 4-12 miles. The temperature of the troposphere decreases with height. This layer is known as the lower atmosphere.

Above the troposphere is the stratosphere, which extends to about 30-35 miles above the earth's surface. Temperature rises within the stratosphere but still remains well below freezing.

From about 35 to 50 miles above the surface of the earth lies the mesosphere, where the air is especially thin and molecules are great distances apart. Temperatures in the mesosphere reach a low of -184°F (-120°C). The stratosphere and the mesosphere are the middle atmosphere. Thermosphere:

The thermosphere rises several hundred miles above the earth's surface, from 50 miles up to about 400 miles. Temperature increases with height and can rise to as high as 3,600°F (2000°C). Nonetheless, the air would feel cold because the hot molecules are so far apart. This layer is known as the upper atmosphere. Exosphere:

Extending from the top of the thermosphere to 6200 miles (10,000 km) above the earth is the exosphere. This layer has very few atmospheric molecules, which can escape into space. 4.
1) The troposphere is the first layer above the surface and contains half of the Earth's atmosphere. Weather occurs in this layer.  2) Many jet aircrafts fly in the stratosphere because it is very stable. Also, the ozone layer absorbs harmful rays from the Sun. 3) Meteors or rock fragments burn up in the mesosphere.

4) The thermosphere is a layer with auroras. It is also where the space shuttle orbits.  5) The atmosphere merges into space in the extremely thinexosphere. This is the upper limit of our atmosphere.

Cite This Document

Related Documents

  • Essay College Life

    ...Mark Huntsman Don Airhart College Composition 2/23/2014 College Life College is for students who are just graduating high school, or older people who are going back to school for a better chance at achieving their goals for a better job. College life has been, and still is portrayed as being nothing but partying, and having fun by the media....

    Read More
  • College Diversity

    ...Diversity in the College Setting Colleges in America differ from numerous ways. It is noted that some are public while others are private. Some offer professional and graduate programs, while others offer undergraduate education. Each of the thousands of the colleges in the US has its own distinct and specific mission. This forms the basis ...

    Read More
  • Pondering College

    ...“Pondering the Purpose of College.” Education defined by Webster is the knowledge, skill and understanding that you get from attending a school, college, or university, and also the action or process of teaching someone especially in a school, college, or university. (Webster) We are encouraged to enriching and better ourselves throug...

    Read More
  • College

    ...College and high school have the same goal; which is to educate students and give them knowledge that will help them along the way in life. They both allow for growth and development, but have two completely different experiences. While high school is mandatory and helps prepare students for college academically, it can also teach life lessons t...

    Read More
  • College

    ...satisfaction. I have done everything to keep a wide array of options open and am looking forward to a traditional college experience including strong school spirit, a Greek system, a strength in science and the opportunity to connect socially with other active, interesting students. I am armed with a fierce independence, well-grounded sense of s...

    Read More
  • College

    ...Quallan Phillips Period 6 Dear Barbara I. Dewey, * Introduction: My name is Quallan Phillips. I’m currently a sophomore at East, applying for your college. Penn State University is a college I have always wanted to attend. Everything about it has inspired me to do well in life. The type of culture around the college is just mind blowing....

    Read More
  • College Expense

    ... Ignorance: The One Thing More Expensive Than College Although a good education for all Americans is essential for individual success and national economy, the truth is it has become increasingly expensive and doesn’t even guarantee a job after graduation. What exactly qualifies as a “good education?” Most people associate...

    Read More
  • College is Not a Waste

    ... “College is Not a Waste” In Bird’s article, “College is a Waste of Time and Money”, she approaches the topic of higher education as, “a ticket to the big show”, rather than the continuation of education in a chosen career field culminated with the tools to hone oneself socially and professionally. Furthermore, it would seem tha...

    Read More

Discover the Best Free Essays on StudyMode

Conquer writer's block once and for all.

High Quality Essays

Our library contains thousands of carefully selected free research papers and essays.

Popular Topics

No matter the topic you're researching, chances are we have it covered.