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 ...

(10 pages) 97 0 2.8 Apr/1995

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 ...

(9 pages) 72 0 3.8 Jan/1996

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 ...

(8 pages) 285 3 4.6 Oct/2002

Subjects: Science Essays > Biology > Human Biology


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 ...

(3 pages) 128 3 4.6 Feb/2003

Subjects: Science Essays

"Amphibian Population Decrease"

(3 pages) 24 0 4.0 Apr/2003

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

(4 pages) 66 1 3.0 Apr/2003

Subjects: Humanities Essays > Health & Medicine > Diseases

How burns heal.

(2 pages) 30 0 4.2 Oct/2003

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 ...

(13 pages) 102 0 5.0 Oct/2004

Subjects: Science Essays > Chemistry

Air polution

(2 pages) 40 1 4.6 Dec/2004

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 ...

(9 pages) 57 1 5.0 Feb/2005

Subjects: Humanities Essays > Health & Medicine


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 ...

(6 pages) 75 1 4.2 Oct/2005

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 ...

(4 pages) 25 0 5.0 Oct/2005

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 ...

(3 pages) 16 0 0.0 Mar/2006

Subjects: Science Essays > Astronomy

Chemistry hits the beach

(4 pages) 10 0 3.0 Feb/2008

Subjects: Science Essays > Chemistry


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 ...

(2 pages) 39 0 0.0 Feb/2008

Subjects: Science Essays > Environmental Science


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 ...

(3 pages) 12 0 0.0 Oct/2008

Subjects: Science Essays > Biology

Chemistry of the Stratosphere

(4 pages) 14 0 3.7 Oct/2008

Subjects: Science Essays > Chemistry

Earth Science: Atmosphere Essay

(3 pages) 32 0 4.0 Jan/2009

Subjects: Science Essays > Earth Sciences

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 ...

(4 pages) 12 0 5.0 May/2009

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:, K. (2009, May ). Ultraviolet Radiation . Retrieved July 25, 2009, from Health Physicis Society : ... ed July 25, 2009, from Health Physicis Society : Radiation and Health . (n.d.). Retrieved July 25, 2009, from World Health Orgainzation: ...

(2 pages) 28 0 0.0 Apr/2010

Subjects: Science Essays > Biology