The stratosphere stretches 17-50 km above the earth’s surface. Its lower portion holds enough ozone gas (O3) to filter out 95% of the sun’s harmful UV rays.…
The sun's rays contain two types of ultraviolet radiation that reach your skin: UVA and UVB. UVB radiation burns the upper layers of skin (the epidermis), causing sunburns.…
• Stratosphere o Extends 11-‐30 miles upwards o Similar in composition to troposphere BUT contains 1/1000 of water vapor and much more ozone (O3) • Stratospheric ozone makes up “ozone layer” o Located in lower part of stratosphere and blocks 95% of sun’s ultraviolet (UV) radiation from reaching earth’s surface o Ozone layer vital for life on earth!…
The ozone layer is a section in Earth's stratosphere that sits between ten and fifty miles above the surface. The ozone layer is a protective barrier that exists between the life forms on Earth and absorbs the harmful ultraviolet-B raditation from the sun. This protective layer is essential in order for life to exist on the Earth. Ozone is a colorless gas that is formed by a chemical reaction of oxygen molecules, oxygen atoms, and solar radiation. Contrary to popular belief, ozone is actually a greenhouse gas and the loss of it would actually decrease the global warming effect on Earth instead of increasing it (Introduction). Ozone in the stratosphere is beneficial to life on Earth, but ozone at ground level is harmful to living things. Ozone on the ground level is made by sunlight reacting with motor vehicle exhaust gases and is a major component of smog in major cities. (Green Lane).…
Ultraviolet radiation (UVR) is defined by wavelengths, and is divided into different energy levels from shortest to longest wavelength. UVC rays have the shortest wavelength, the most energy and fortunately do not penetrate the atmosphere. UVB rays are the most forceful rays that reach the earth. UVB stimulates the production of new melanin which leads to an increase in the dark-colored pigment within a few days and causes the cells to be stimulated forming a thicker epidermis. UVA activates melanin pigment already present in the upper skin cells and it penetrates into the deeper skin layers, where connective tissue and blood vessels are affected. As a result, the skin gradually loses its elasticity and starts to wrinkle therefore causing premature aging. Although UVB light is primarily responsible for sunburn, UVA light causes tanning, even though it penetrates the skin more than UVB light. Regardless of the effects on the skin, both types of light contribute to premature aging, skin cancer and other types of skin damage.…
Do you like bathing in the sun? Going out and getting a nice tan? Of course mostly everyone likes going out into the warm sun, but going out without sunscreen is a bit risky. Tanning is one of the main causes of our countries skin cancer epidemic. People should learn the many risks and dangers of being over exposed by ultra violet rays.…
Ozone is produced when highly energetic solar radiation strikes molecules of oxygen O2 this causes them to split and produce O molecules. They then join with the remaining O2 and produce O3 molecules. These O3 molecules are what are known as Ozone. The "hole" in the ozone layer is not actually a hole it is a thinning of the ozone layer due to seasonal changes.…
Sun tanning describes a darkening of the skin (especially of fair-skinned individuals) in a natural physiological response stimulated by exposure to ultraviolet (UV) radiation from sunshine or from artificial sources such as a tanning bed. With excessive exposure to ultraviolet, a sunburn can develop.…
In conclusion sun exposure is needed in order to maintain a healthy lifestyle. Exposure to sun can have positive effects such as reducing risk of diseases and helping organ functions. On the contrary too much sun exposure can have long lasting effects. As mention in source A, “one blistering sunburn can double the chances of skin cancer” Long exposure of sun can lead to skin disease like skin cancer however now indays thier are products that can help protect from sun burns.Like seen in source D,applying sunblock can help miminize the risk of skin dieses and other long lasting…
Ozone quality: Ozone is a gas that shields the earth’s and occurs naturally in the earth’s upper atmosphere. It protects the earth from harmful ultraviolet radiation. Without the Ozone layer there would be no life on earth! Chemicals such as…
Thesis or Main Idea: Ozone Depletion is an atmospheric phenomenon which destroys the stratospheric ozone layer that shields the earth from ultraviolet radiation which is harmful to life.…
has a pleasant odor in concentrations of less than 2 ppm, and is irritating and…
Ozone, pronounced OH-Zohn, is a form of oxygen that is present in the earth's 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.…
Other global concerns because of air pollution include the greenhouse gases and the hole in the ozone layer in the stratosphere. The Earth's ozone layer is supposed to protect people from the Sun's harmful ultraviolet rays, but in the 1970s, scientists found out that some chemicals let out into the atmosphere makes the ozone turn into oxygen, which means that more ultraviolet rays reach the Earth. During the 1980s, scientists found that the ozone layer above the South Pole had thinned by 50 to 98 percent.…
man has in recent times, drained these resources, not out of necessity but out of greed.…