143 results found, view free essays on page:
-
State And Federal Lung Function
1,203 words
... used a group of 6, 340 Seventh Day Adventists
living throughout California (62 % lived in the
Basin). Results of the study suggest a
relationship between long term exposure to air
pollution and the development of specific chronic
diseases. Residents living in areas which exceeded
state and federal standards for suspended
particulates on 42 days or more per year had
higher risks of respiratory diseases, including a
33 % greater bronchitis risk and 74 % greater
asthma risk. In addition, women ...
Free research essays on topics related to: lung function, ozone levels, lung damage, state and federal, air pollution
-
Ultraviolet Radiation Ozone Layer
1,027 words
Greenhouse Effect On a bright, cool day, most
people notice the sun's rays as feeling good on
their skin. By nature, many of us even try to stay
on the sunny side of the street while walking. The
sun is 93 million miles away from earth and its
energy travels to us in moving waves called
radiation. The energy becomes heat, light and
other energy too. Visible sunlight allows us to
see the world around us, but there is invisible
sunlight, too. These rays can't be seen, but some
can be felt as heat....
Free research essays on topics related to: ultraviolet radiation, carbon dioxide, ozone layer, ultraviolet rays, greenhouse effect
-
Ozone Depletion Air Pollution
385 words
The issue of whether the people of the world have
exaggerated the threat of the ozone depletion has
been widely debated. It is an important issue
because it concerns health and well being now and
tomorrow. A variety of different arguments have
been put forward about this issue. Because air
pollution is greatly affecting the ozone, America
needs to take immediate steps to stop ozone
depletion. This essay will examine different
arguments concerning the ozone layer. Ozone is a
highly irritant gas, ...
Free research essays on topics related to: clean air, quality standards, air quality, ozone depletion, air pollution
-
Ozone Molecules Ozone Depletion
1,052 words
The beginning of the CFC (chlorofluorocarbons) era
started in 1928, when CFC' were invented by a Du
Pont chemist. CFC' were best known as "freon's"
and became famous as a safe, nonflammable
refrigerant. It's invention became a great triumph
when Freon took the place of sulfur dioxide or
ammonia which was used as the working liquid in
refrigerators. It eventually became widely used in
automobile air conditioners and nontoxic
propellants in aerosol cans. It's insulating
properties also was used fo...
Free research essays on topics related to: ozone layer, ozone molecules, ozone depletion, du pont, skin cancers
-
Low Birth Weight Nitrogen Dioxide
1,290 words
Air Pollution Air pollution is one of the most
dangerous problems of our times. Problems caused
by pollution can be local and minor because of the
Earth's own ability to absorb pollutants. The
industrialization of society, the introduction of
motorized vehicles, the explosion of the
population are factors sharpening the growing air
pollution problem. Carbon monoxide, nitrogen
oxides and particulate matter belong to pollutants
found in most urban areas. These pollutants are
dispersed throughout t...
Free research essays on topics related to: motor vehicles, low birth weight, carbon monoxide, nitrogen dioxide, nitrogen oxides
-
Greenhouse Gases Ultraviolet Radiation
421 words
Discovery of the hole in the ozone layer showed
that human activity has a major impact on Earth.
The destruction of ozone in the stratosphere high
above the planets surface has been brought about
as the result of the widespread use of chemicals,
which under normal conditions are chemically inert
and harmless. Ozone occurs at all levels in the
atmosphere, but most of it is found in the
stratosphere, between about 15 - 50 kilometres
above the Earths surface. Even there it occurs in
minute concentr...
Free research essays on topics related to: ultraviolet radiation, ozone layer, greenhouse gases, ozone hole, ozone
-
Ozone Layer Ultraviolet Rays
962 words
The Problem The atmospheric ozone layer protects
all living things from the harmful effects of the
Sun. In recent years however, much damage has been
caused to the ozone layer, causing it to decrease
in size. The depletion of the ozone layer has and
will continue to have many detrimental effects on
all living things on this planet. A thinner layer
will allow more of the suns ultraviolet radiation
to reach the Earths surface. In particular, it
will be the increase of UV-B rays which will have
the...
Free research essays on topics related to: ultraviolet rays, stratospheric ozone, earths surface, ozone layer, ultraviolet radiation
-
Natural Greenhouse Effect Greenhouse Gases
1,722 words
What is global warming, and how is it affecting
the Earth and its inhabitants? Global Warming is
sometimes referred to as the greenhouse effect.
The greenhouse effect is the absorption of energy
radiated from the Earths surface by carbon dioxide
and other gases in the atmosphere, causing the
atmosphere to become warmer. The greenhouse effect
is what is causing the temperature on the Earth to
rise, and creating many problems that will begin
to occur in the coming decades. For the last 10,
000 yea...
Free research essays on topics related to: ozone layer, natural greenhouse effect, carbon dioxide, greenhouse gases, uv radiation
-
Uv Radiation Ozone Depletion
993 words
Our Radiant Planet- Depletion of the Ozone Layer
Ozone is a relatively unstable form of molecular
oxygen containing three oxygen atoms produced when
upper-atmosphere oxygen molecules are split by
ultra violet light. Stratospheric ozone is found
in a broad band, extending generally from 15 to 35
km above the earth. Although the ozone layer is
surprisingly thin, it acts as a protective shield
to the earth, as it filters out most of the
harmful solar ultraviolet radiation (in particular
UV-B) that ...
Free research essays on topics related to: ozone depletion, uv radiation, ozone molecules, earths surface, ozone layer
-
Forms Of Life Ozone Depletion
457 words
The Ozone Layer Ozone layer depletion slows There
is good news about the ozone layer above us. The
good news about the ozone layer is not always
frequent. On International Ozone Day, the report
came in that the ozone levels have decreased above
Montreal and other residents of southern Canada.
The ozone levels have decreased to a normal level.
Normal meaning the levels have dropped from the
levels reported in 1980. The ozone layer is an
important and fragile part of earth. If we did not
have an o...
Free research essays on topics related to: ozone levels, ozone layer, ultraviolet light, forms of life, ozone depletion
-
Ultraviolet Rays Congressional Quarterly
755 words
I do not think that until recent evidence of our
depleting ozone, that the 20 th century population
showed much concern. I know that when I was
younger it did not matter to me the importance of
using an aerosol can of hair spray or a plastic
pump non-aerosol hairspray. I figured that they
were all the same. I feel that anyone without the
education of the destruction would care either. It
was not until I read about the evidence of our
destruction that my ignorance of the ozone problem
became too ...
Free research essays on topics related to: ozone layer, ultraviolet rays, congressional quarterly, air pollution, skin cancer
-
Ozone Layer Ultraviolet Radiation
1,027 words
Ozone is an important molecule in maintaining the
homeostasis in the environment. Ozone, the
molecule O 3, makes a layer in the stratosphere,
situated 10 to 15 kilometers from the earths
surface. The dioxide molecule, O 2 and Oxygen atom
O, collide with each other result in the formation
of Ozone, O 3. In this reaction, the molecule O 3
contains an excess of energy. Once the molecule is
formed, it is not stable enough to last long. The
energy-rich O 3 molecules discards the excess
energy by coll...
Free research essays on topics related to: uv b, ozone layer, skin cancer, ultraviolet radiation, earths surface
-
Upper Atmosphere Ozone Layer
591 words
Ozone, pronounced OH Zone, is a form of oxygen
that is present in the earths atmosphere in small
amounts. Ozone in the upper atmosphere is a major
factor in making life on earth possible. But ozone
in the lower atmosphere contributes to air
pollution. Ozone is used commercially in water
purification process and as a bleaching agent.
Ordinary oxygen molecules have two oxygen atoms,
ozone has three. Ozone is produced naturally
through photochemical and electric discharge
reactions. Photochemical p...
Free research essays on topics related to: chemical reactions, upper atmosphere, lower atmosphere, ozone layer, ozone hole
-
Ultraviolet Rays Uv Rays
633 words
The ozone layer shields the earth from most of the
harmful radiation and light comming from the sun.
The ozone reflects and absorbs the ultraviolet
rays that try to come in. Without this kind of
protection, all living things will be effected by
these UV rays. Skin cancer develops in most living
mammals as a cause of an overabundance of the suns
ultraviolet rays. The ozone layer is located in
the earths stratosphere. The ozone layer is
located from about fifteen-to-thirty kilometers
above the ear...
Free research essays on topics related to: squamous cell, skin cancer, ultraviolet rays, ozone layer, uv rays
-
Reduce The Amount Ozone Layer
899 words
Society has been widely addressed with the many
problems that we are having in our environment
today. A major problem is that of CFCs. CFC stands
for Chlorofluorocarbons which are found in many of
the aerosol spray cans. In December of 1973,
Rowland and Molina discovered that CFCs can
destroy the ozone in the stratosphere. In June
1975, the Natural Resources Defence Council (NRDC)
sued the Consumers Product Safety Commission for a
band of CFCs used in aerosol spray cans. United
States fifth larg...
Free research essays on topics related to: forty percent, air pollution, ozone layer, reduce the amount, oxygen molecules
-
Ozone Layer Uv Rays
615 words
What is ozone? Why do we need it? Until recent
history the general population didn t know the
answer to these questions. In our blindness we
have consistently and steadily been destroying it,
not on purpose but by our own ignorance and need
for our high quality of life. We have been
releasing harmful chemicals into our atmosphere.
So what really is this ozone? Quite simply it is a
invisible shield surrounding the Earth protecting
us from the fierce uncontrolled sun. The sun is so
powerful it pro...
Free research essays on topics related to: ozone layer, layer, uv rays, harmful chemicals, ozone
-
Hydrogen Sulfide Water Treatment
263 words
Ozonification in Water Treatment Report Ozone is
natures agent for cleaning and treating both air
and water. That clean fresh smell in the air
following a thunderstorm, the bright sky and
brilliant colors of nature are due to ozone
created by lightning and the Suns energy. Ozone is
a gas that is created naturally in our atmosphere
when oxygen in the air is exposed to high
intensity ultraviolet rays. Both the sun and
lightning create the ozone. Ozone is also one of
natures best bleaching agents, ...
Free research essays on topics related to: reduces, hydrogen sulfide, oxygen, water treatment, ozone
-
Chlorofluorocarbons Cfcs Sulphur Dioxide
3,209 words
Space: Pollution is a Global Responsibility The
statement says that pollution is a global
responsibility, but first of all, in order to
understand the statement and therefore argue the
points of view, we must state what can be defined
as Pollution. The Oxford dictionary states that to
pollute an area is to Destroy the purity or
sanctity of; make foul or filthy; contaminate or
defile There are many types of pollution that
effect the environment on the universal scale and
also on the microcosmic s...
Free research essays on topics related to: carbon dioxide, ozone layer, nitrous oxide, sulphur dioxide, chlorofluorocarbons cfcs
-
Books New York Stratospheric Ozone
1,223 words
Chloroflourocarbons were discovered in the 1920 s
by Thomas Midgley, an organic chemist at General
Motors Corporation. He was looking for inert,
non-toxic, non-flammable compounds with low
boiling points that could be used as refrigerants.
He found what he was looking for in the form of
two compounds: dichlorodifluoromethane (CFC- 12)
and trichloromonoflouromethane (CFC- 11). In both
compounds, different amounts of chlorine and
fluorine are combined with methane, which is a
combination of carbon...
Free research essays on topics related to: books new york, ozone layer, air conditioning, air conditioners, stratospheric ozone
-
Aerosol Sprays Ozone Layer
768 words
Ozone The problem which I decided to adress in my
campaign was the problems that are currently
facing our Earths ozone layer and breathable air.
In this report I wish to educate you about the
effects of ozone and hopefully I will motivate you
to change your attitudes and actions to help with
the problem. Ozone is defined as an odorless,
colorless gas made up of three atoms of oxygen. It
exists in our Earths upper atmosphere and at
ground level. In the upper atmosphere, ozone
serves as a protecti...
Free research essays on topics related to: greenhouse effect, ozone layer, aerosol sprays, ultra violet, upper atmosphere
143 results found, view free essays on page: