Mell What layer of the atmosphere contains ozone that filters UV radiation?
The ozone layer in the stratosphere absorbs a portion of the radiation from the sun, preventing it from reaching the planet’s surface. Most importantly, it absorbs the portion of UV light called UVB. UVB is a kind of ultraviolet light from the sun (and sun lamps) that has several harmful effects.
Does ozone filter out UV radiation?
The stratospheric ozone layer screens out much of the sun’s harmful UV rays.
What filters UV radiation in the atmosphere?
Ozone
Ozone is a particularly effective absorber of UV radiation. As the ozone layer gets thinner, the protective filter activity of the atmosphere is progressively reduced.
What ozone protects from UV?
The stratospheric ozone layer is Earth’s “sunscreen” – protecting living things from too much ultraviolet radiation from the sun. The emission of ozone depleting substances has been damaging the ozone layer.
What are the two most common gases in the atmosphere?
Nitrogen and oxygen are by far the most common; dry air is composed of about 78% nitrogen (N2) and about 21% oxygen (O2). Argon, carbon dioxide (CO2), and many other gases are also present in much lower amounts; each makes up less than 1% of the atmosphere’s mixture of gases. The atmosphere also includes water vapor.
Why ozone absorbs UV radiation?
How does ozone protect us from UV-B? Ozone absorbs UV-B radiation from the sun. When an ozone molecule absorbs UV-B, it comes apart into an oxygen molecule (O2) and a separate oxygen atom (O). By absorbing UV-B in the stratosphere, the ozone layer prevents harmful levels of this radiation from reaching Earth’s surface.
Do UV rays cause global warming?
UV rays cannot be seen or felt, but they are very powerful and change the chemical structure of molecules. UV radiation plays a small role in global warming because its quantity is not enough to cause the excess heat trapped in the atmosphere.
Where is good ozone found?
upper atmosphere
Called stratospheric ozone, good ozone occurs naturally in the upper atmosphere, where it forms a protective layer that shields us from the sun’s harmful ultraviolet rays.
How is UV radiation filtered by the atmosphere?
Most solar UVB is filtered by the atmosphere. The relatively long-wavelength UVA accounts for approximately 95 per cent of the UV radiation reaching the Earth’s surface. It can penetrate into the deeper layers of the skin and is responsible for the immediate tanning effect. Furthermore, it also contributes to skin ageing and wrinkling.
Which is an effective absorber of UV radiation?
Ozone is a particularly effective absorber of UV radiation. As the ozone layer gets thinner, the protective filter activity of the atmosphere is progressively reduced. Consequently, the people and the environment are exposed to higher levels of UV radiation, especially UVB.
Which is the most protective layer of the atmosphere?
The ozone layer, the one that protects us from radiation that comes from the Sun and outer space, is found in the stratosphere. The atmosphere of Earth is divided into several different layers. The easiest way to think about the atmosphere above our planet is to imagine an invisible shield that protects our planet from all the bad stuff
Which is part of the Earth absorbs most of the sun’s radiation?
The Ozone layer or ozone shield is a region of Earth’s stratosphere that absorbs most of the Sun’s ultraviolet radiation.