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  1. en.wikipedia.org › wiki › OzoneOzone - Wikipedia

    Ozone (/ ˈ oʊ z oʊ n /) (or trioxygen) is an inorganic molecule with the chemical formula O 3.It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O 2, breaking down in the lower atmosphere to O 2 ().Ozone is formed from dioxygen by the action of ultraviolet (UV) light and electrical discharges within the ...

  2. www.canada.ca › services › air-qualityOzone - Canada.ca

    Learn about ozone, its sources and potential health risks. On this page. Health effects; Reduce exposure in the home; Indoor sources of ozone; About ozone

  3. Jun 28, 2024 · ozone, (O 3), triatomic allotrope of oxygen (a form of oxygen in which the molecule contains three atoms instead of two as in the common form) that accounts for the distinctive odor of the air after a thunderstorm or around electrical equipment. The odor of ozone around electrical machines was reported as early as 1785; ozone’s chemical constitution was established in 1872.

  4. Apr 17, 2024 · What Is Ozone? Ozone (O 3) is a gas molecule composed of three oxygen atoms.Ozone is good up high, bad nearby. The ozone layer found high in the upper atmosphere shields us from much of the sun's ultraviolet radiation.

  5. Jun 14, 2024 · Ozone layer, region of the upper atmosphere, between roughly 15 and 35 km (9 and 22 miles) above Earth’s surface, containing relatively high concentrations of ozone molecules. Approximately 90 percent of the atmosphere’s ozone occurs from 10–18 km (6–11 miles) to about 50 km (about 30 miles) above Earth’s surface.

  6. Feb 14, 2023 · The concentration of ozone varies with altitude. Peak concentrations, an average of 8 molecules of ozone per million molecules in the atmosphere, occur between an altitude of 30 and 35 kilometers.

  7. Oct 19, 2023 · The ozone layer is one layer of the stratosphere, the second layer of Earth’s atmosphere.The stratosphere is the mass of protective gases clinging to our planet. The stratosphere gets its name because it is stratified, or layered: as elevation increases, the stratosphere gets warmer. The stratosphere increases in warmth with elevation because ozone gases in the upper layers absorb intense ...

  8. Mar 13, 2023 · Why is the ozone layer important? The ozone layer absorbs 97% to 99% of the sun’s incoming ultraviolet radiation (UV-B). This is fundamental to protecting life on Earth’s surface from exposure to harmful levels of this radiation, which can damage and disrupt DNA.

  9. Yet ozone isn't all bad news. In higher concentrations as a layer far up in the stratosphere, roughly 10 to 50 kilometres (6 to 30 miles) overhead, this same molecule is a lifesaver. It absorbs between 90 and 99 percent of the ultraviolet radiation that reaches Earth from the Sun, preventing it from damaging living things below.

  10. Science: Ozone Basics. Ozone is very rare in our atmosphere, averaging about three molecules of ozone for every 10 million air molecules.

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