This topic contains a solution. Click here to go to the answer

Author Question: Most weather occurs in this temperature-characterized atmospheric layer, the ________. Fill in ... (Read 40 times)

TFauchery

  • Hero Member
  • *****
  • Posts: 500
Most weather occurs in this temperature-characterized atmospheric layer, the ________.
 
  Fill in the blank(s) with the appropriate word(s).

Question 2

Give the details of the destruction of the ozone layer by chlorofluorocarbons . Include a discussion of why such a large ozone hole forms over Antarctica in the spring.
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

6ana001

  • Sr. Member
  • ****
  • Posts: 311
Answer to Question 1

Answer: troposphere

Answer to Question 2

Answer: Ozone in the part of the upper atmosphere called the stratosphere is vital to life on Earth because it absorbs lethal ultraviolet radiation from the Sun. Rowland and Molina proposed that these molecules could reach the stratosphere intact, where they would break down and release free atoms of chlorine (Cl). Under certain circumstances, chlorine atoms can effectively destroy ozone molecules. In the first step of this process, a chlorine atom reacts with an ozone molecule to produce O2 and chlorine monoxide (ClO). Next, an oxygen atom (O) reacts with ClO, creating another O2 molecule while freeing the chlorine atom (Cl). Note that the chlorine atom that first reacted with the ozone molecule is still present and capable of reacting again with another ozone molecule. This fact makes chlorine atoms able to repeatedly break down ozone molecules. In fact, as many as 100,000 ozone molecules can be removed from the atmosphere for every chlorine molecule present. Rowland and Molina's theory is now accepted as fact, and the two scientists were rewarded for their work with a Nobel Prize in 1995. The most severe ozone depletion occurs every October (spring in the Southern Hemisphere) and persists for several months. Air currents surrounding Antarctica isolate the region from the rest of the hemisphere, so there is less mixing with ozone-rich air from the north. Another factor is the unusual chemistry of clouds found in the Antarctic stratosphere. At the very low temperatures found there, clouds are largely made up of nitric acid and water, rather than ordinary water ice. Processes involving these clouds allow certain chlorine compounds to accumulate. When the dark Antarctic winter ends, the burst of ultraviolet radiation breaks apart these compounds to create free chlorine atoms (Cl). These Cl free radicals readily destroy ozone.




TFauchery

  • Member
  • Posts: 500
Reply 2 on: Jul 14, 2018
Wow, this really help


yeungji

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

For a complete list of videos, visit our video library