Does sunlight damage the ozone layer?
Does sunlight damage the ozone layer?
Ninety percent of the ozone in the atmosphere sits in the stratosphere, the layer of atmosphere between about 10 and 50 kilometers altitude. The natural level of ozone in the stratosphere is a result of a balance between sunlight that creates ozone and chemical reactions that destroy it.
How is o3 formed?
Stratospheric ozone is formed naturally through the interaction of solar ultraviolet (UV) radiation with molecular oxygen (O2). The “ozone layer,” approximately 6 through 30 miles above the Earth’s surface, reduces the amount of harmful UV radiation reaching the Earth’s surface.
What does ozone block from the sun?
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). Later, the two components can reform the ozone molecule (O3).
How is ozone helpful to us?
The ozone layer is a natural layer of gas in the upper atmosphere that protects humans and other living things from harmful ultraviolet (UV) radiation from the sun. The ozone layer filters out most of the sun’s harmful UV radiation and is therefore crucial to life on Earth.
What is meant by ozone layer What are its advantages?
The ozone layer acts as a shield to absorb the UV rays, and keep them from doing damage at the Earth’s surface. 6… The ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (UVR) from the sun. 7…ozone protects us from skin cancer and cataracts.
What are the three advantages of ozone layer?
The major function of the ozone layer is to stop the harmful radiations coming from the sun as well as from stars. Ozone captures those radiations which are of low wavelength. It also stops the harmful ultraviolet rays. These radiations are very harmful for living beings.
What is ozone layer made of?
The ozone layer, also called the stratosphere, is composed of the ozone gas (90% of the total ozone in the atmosphere). The ozone has three oxygen atoms, and it is the result of the action of Ultra Violet (UV) radiation on oxygen molecules, composed of two oxygen atoms.
Why is Ozone Day important?
Ozone layer acts as a shield protecting plant, human and aquatic life. From our school days, we have learned the importance of the ozone layer and how it helps to save us from harmful radiation emitted by the sun. This year’s theme for the World Ozone Day 2020 is “Ozone for life: 35 years of ozone layer protection”.
What is the theme of 2020 Ozone Day?
16 September is World Ozone Day. The theme for 2020 is Ozone for life: 35 years of ozone layer protection. It marks 35 years of the Vienna Convention. Inger Anderson, Executive Director of UNEP, explains how the decisive global response to the ozone layer depletion has become a model of international cooperation.
What is the message of ozone day?
The slogan of the day, ‘Ozone for life’, reminds us that not only is ozone crucial for life on Earth, but that we must continue to protect the ozone layer for future generations.
What is the theme of Ozone Day 2020?
Ozone for life: 35 years of ozone
How do we celebrate Ozone Day?
In 1994, the United Nations General Assembly proclaimed 16 September the International Day for the Preservation of the Ozone Layer, commemorating the date of the signing, in 1987, of the Montreal Protocol on Substances that Deplete the Ozone Layer (resolution 49/114).
WHO declared Ozone Day?
the UN General Assembly