Essays Tagged: "Ultraviolet"
The Atmospheric Ozone Layer
on earth as we know it, because the ozone layer controls the absorption of a portion of the deadly ultraviolet (UV) rays from the sun. UV-A rays, including wavelengths between 320 and 400nm, are not ...
Subjects: Science Essays > Environmental Science
CFC'S detroy the Ozone
nishing effect on the ozone layer. Furthermore, the deterioration of the ozone cause an increase of Ultraviolet (UV) radiation which can have a negative effect on human skin and eyes. As a writer for ... wavelengths. This range is known as the Electromagnetic Spectrum. In this spectrum there is Gamma, Ultraviolet, Visible, Infrared, and Radio waves.It is the ultraviolet (UV) radiation coming from the ...
Subjects: Science Essays > Environmental Science
All about cancer.
cent of the time.5What causes skin cancer?Skin cancer is most often caused by long-term exposure to ultraviolet (UV) rays. Usually people with light color skin tend to have more skin cancer because th ... ple with light color skin tend to have more skin cancer because they lack melanin, which fibers out ultraviolet rays. If you play sports and spend most of daytime in exposure to the sun you should use ...
Subjects: Science Essays > Biology > Human Biology
CFC Use
atmosphere. Once CFCs reach the stratosphere, which is just past the atmosphere, they are zapped by Ultraviolet radiation coming from the sun. These ultraviolet rays from the sun cause the CFCs to com ... ne that is attacked loses on of its three molecules of oxygen, thus making it incapable of stopping ultraviolet rays, from the sun, from hitting Earth.The positive effects of using CFCs strongly outwe ...
Subjects: Science Essays
"Amphibian Population Decrease"
Subjects: Science Essays > Biology
Dangers of tanning booths.
s 1969 article about the biological effects of UV radiation, Dr. Fred Urbach says the sun gives off ultraviolet A rays as well, which are linked to melanoma, the most serious type of skin cancer that ... gal, M.E. (1990). Safe in the Sun. New York, NY: WalkerUrbach, F. (1969). The biological effects of ultraviolet radiation, withemphasis on the skin. International Society of Biometeorology
Subjects: Humanities Essays > Health & Medicine > Diseases
How burns heal.
Subjects: Science Essays > Biology > Human Biology
The catalytic decomposition of Hydrogen peroxide
t; 2H2O (l) + O2 (g)This reaction does occur spontaneously at room temperature with the presence of Ultraviolet light; however only very slowly. It occurs far faster when a catalyst is used. Catalysts ...
Subjects: Science Essays > Chemistry
Air polution
Subjects: Science Essays
The Benefits of Tanning
ve been claiming for years. Piles of research have linked the cause of skin cancer with exposure to ultraviolet radiation. Both the sun and tanning beds or sunlamps emit UV rays. According to Skin Hea ... n for Teens, there are three different types of skin cancer, and all caused, at least partially, by ultraviolet radiation. The first two types, basal cell carcinoma and squamous cell carcinoma, are tr ...
Subjects: Humanities Essays > Health & Medicine
Atmosphere.
and the combining of atomic oxygen with molecular oxygen. This is accomplished with the appropriate ultraviolet (UV) radiation and oxygen at an optimum altitude of about twenty miles.The ionosphere is ...
Subjects: Science Essays > Earth Sciences
Chapter 12 of physcial education.
anti-angiogenesis, and protease inhibitors.The sunlight is necessary for light and warmth, but the ultraviolet radiation causes harm to our body especially the skin and eyes, even when the sun is not ...
Subjects: Humanities Essays > Health & Medicine
Early Galaxies Looked Similar
lines of hydrogen, discovered by the physicist Theodore Lyman), the galaxy "disappears" in the far-ultraviolet filter. Figure 2 illustrates the "disappearance" of the galaxy in the far-UV filter. The ...
Subjects: Science Essays > Astronomy
Chemistry hits the beach
Subjects: Science Essays > Chemistry
AIR POLLUTION
air conditioners.CFC's may be weaking the ozone layer in the stratosphere.The ozone layer prevents ultraviolet radiation from reaching Earth.In the Stratosphere,ultraviolet radiation releases chlorin ... orine from CFC's.Chlorine from CFC's destroys ozone molecules.Less ozone means less protection from ultraviolet radiation.CFC's are 10 000 times more effective than carbon dioxide at trapping heat.And ...
Subjects: Science Essays > Environmental Science
BIOLOGY: WATER TREATMENT
s that can be potentially harmful.Ultra Violet radiation- Another way of purifying water is through Ultraviolet radiation. UV light consists of non visible waves that can sterilise and kill any harmfu ...
Subjects: Science Essays > Biology
Chemistry of the Stratosphere
Subjects: Science Essays > Chemistry
Consequences of the Ozone layer
the stratosphere about 10 to 50km above the earth’s surface. It filters shorter wavelengths of ultraviolet light. Ozone layer occurs naturally; from the ultraviolet rays that react with oxygen mo ... ts back.The sunspot cycle is an 11 year cycle which relates to the various changes of the amount of ultraviolet radiation the sun produces. Ozone is produced by ultraviolet radiation therefore the amo ...
Subjects: Science Essays > Atmospheric Sciences
Effects of UV Rays
Ultraviolet radiation (UV) is an electromagnetic spectrum between x-rays and visible light. The sun ... ved July 25, 2009, from NASA: http://earthobservatory.nasa.gov/Features/UVB/Barat, K. (2009, May ). Ultraviolet Radiation . Retrieved July 25, 2009, from Health Physicis Society : http://www.hps.org/h ... ed July 25, 2009, from Health Physicis Society : http://www.hps.org/hpspublications/articles/uv.htmlUltraviolet Radiation and Health . (n.d.). Retrieved July 25, 2009, from World Health Orgainzation: ...
Subjects: Science Essays > Biology