“Discuss the layers of the atmosphere.\" Address the following questions in the

Question

“Discuss the layers of the atmosphere."

Address the following questions in the paper:

1. How are the layers defined?

2. How many layers does the Earth's atmosphere contain?

Your responsibilities are the following:

1) Adequate research and critical thinking are the foundation for your paper. The paper will be approximately 1,000 words.

2) Follow: The Basics of MLA Style Format, as noted in Activities. Use at least three references including your textbook and refer to them appropriately in the text of your paper and a reference page at the end of your paper. Use appropriate grammar, punctuation, and SPELL CHECK YOUR PAPER!

MLA Style Format Guideline for Papers

Double-space the text of your paper, and use Times New Roman, with 12 pt. font size.

Set the margins of your document to 1 inch on all sides.

Indent the first line of paragraphs one half-inch from the left margin. MLA recommends that you use the Tab key as opposed to pushing the Space Bar five times.

Create a header that numbers all pages consecutively in the upper right-hand corner, one-half inch from the top and flush with the right margin.

Formatting the First Page of Your Paper

Title page for your paper is not required.

In the upper left-hand corner of the first page, list your name, your instructor's name, the course, and the date. Again, be sure to use double-spaced text.

Double space again and center the title. Do not underline, italicize, or place your title in quotation marks; write the title in Title Case (standard capitalization), not in all capital letters.

Use quotation marks and/or italics when referring to other works in your title, just as you would in your text: Fear and Loathing in Las Vegas as Morality Play; Human Weariness in "After Apple Picking"

Double space between the title and the first line of the text.

Create a header in the upper right-hand corner that includes your last name, followed by a space with a page number; number all pages consecutively with Arabic numerals (1, 2, 3, 4, etc.), one-half inch from the top and flush with the right margin

Explanation / Answer

Atmosphere into four layers : troposphere, stratosphere, mesosphere, and thermosphere.It is thickest near the surface and thins out with height until it eventually merges with space

STRATOSPHERE  The stratosphere is a layer of Earth's atmosphere. The stratosphere is the second layer, as one moves upward from Earth's surface, of the atmosphere. The stratosphere is above the troposphere and below themesosphere.   The top of the stratosphere occurs at 50 km (31 miles) altitude. The boundary between the stratosphere and the mesosphere above is called the stratopause. The altitude of the bottom of the stratosphere varies withlatitude and with the seasons, occurring between about 8 and 16 km (5 and 10 miles, or 26,000 to 53,000 feet). The bottom of the stratosphere is around 16 km (10 miles or 53,000 feet) above Earth's surface near the equator, around 10 km (6 miles) at mid-latitudes, and around 8 km (5 miles) near the poles. It is slightly lower in winter at mid- and high-latitudes, and slightly higher in the summer. The boundary between the stratosphere and the troposphere below is called the tropopause

Ozone, an unusual type of oxygen molecule that isrelatively abundant in the stratosphere, heats this layer as it absorbs energy from incoming ultraviolet radiationfrom the Sun. Temperatures rise as one moves upward through the stratosphere. This is exactly the opposite of the behavior in the troposphere in which we live, wheretemperatures drop with increasing altitude. Because of this temperature stratification, there is little convection and mixing in the stratosphere, so the layers of air there are quite stable. Commercial jet aircraft fly in the lower stratosphere to avoid the turbulence which is common in the troposphere below.

3 MESOSPHERE

Directly above the stratosphere, extending from 50 to 80 km above the Earth's surface, the mesosphere is a cold layer where the temperature generally decreases with increasing altitude. Here in the mesosphere, the atmosphere is very rarefied nevertheless thick enough to slow down meteors hurtling into the atmosphere, where they burn up, leaving fiery trails in the night sky.

4 THERMOSPHERE

The thermosphere extends from 80 km above the Earth's surface to outer space. The temperature is hot and may be as high as thousands of degrees as the few molecules that are present in the thermosphere receive extraordinary large amounts of energy from the Sun. However, the thermosphere would actually feel very cold to us because of the probability that these few molecules will hit our skin and transfer enough energy to cause appreciable heat is extremely low.

The thermosphere corresponds to the heterosphere, a zone where there is no uniform distribution of gases. In other words, the gases are not well-mixed; instead they are stratified that is layered, in accordance to their molecular masses. In contrast, the gases in the homosphere (consisting of the troposphere, stratosphere and mesosphere) are uniformly distributed.

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