Where is over 95% of incoming ultraviolet radiation absorbed a?
The ozone layer is a thin part of the Earth's atmosphere that absorbs almost all of the sun's harmful ultraviolet light.
Is over 95% of incoming UV-B radiation is absorbed in the stratosphere?
d. Over 95% of incoming UV-B radiation is absorbed in the stratosphere.
What level of atmosphere absorbs ultraviolet?
the stratosphere Ozone in the stratosphere protects life on Earth from harmful ultraviolet (UV) radiation and is therefore often called 'good' ozone. This in contrast to ozone in the troposphere, the lowest layer of the atmosphere, where it is an air pollutant and can be harmful to humans, animals and vegetation.
What percentage of ozone is contained in the stratosphere?
90% About 90% of the ozone in our atmosphere is contained in the stratosphere, the region from about 10 to 50-km (32,000 to 164,000 feet) above Earth's surface.
Which of the following absorbs ultraviolet radiation?
Ozone is a particularly effective absorber of UV radiation.
Where is the ozone layer located?
the stratosphere The Earth's ozone layer. The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth's surface, in the stratosphere.
Is UV radiation higher near the equator?
UV exposure is lower in areas further from the equator because the sun is farther away. Exposure is also decreased because UV rays must travel a greater distance through ozone-rich portions of the atmosphere to reach the earth's surface.
How much UV radiation is absorbed by the ozone layer?
95 to 99.9% Ozone absorbs the most energetic wavelengths of ultraviolet light, known as UV-C and UV-B, wavelengths that harm living things. Oxygen molecules absorb other forms of ultraviolet light, too. Together, ozone and oxygen molecules are able to absorb 95 to 99.9% of the ultraviolet radiation that gets to our planet.
Which layer absorbs the ultraviolet radiation of the sun?
The ozone layer The ozone layer is a region of high ozone concentration in the stratosphere, 15 to 35 kilometres above Earth's surface. The ozone layer acts as an invisible shield and protects us from harmful ultraviolet (UV) radiation from the sun.
Where is the main layer of ozone located?
the stratosphere Most atmospheric ozone is concentrated in a layer in the stratosphere, about 9 to 18 miles (15 to 30 km) above the Earth's surface (see the figure below). Ozone is a molecule that contains three oxygen atoms. At any given time, ozone molecules are constantly formed and destroyed in the stratosphere.
Where is the ozone layer the thickest?
the poles The location of the ozone layer The amount of ozone above a location on the Earth varies naturally with latitude, season, and from day-to-day. Under normal circumstances, the ozone layer is thickest over the poles and thinnest around the equator.
Which gas of the atmosphere holds up ultraviolet rays?
So, the correct answer is 'O3'
What is found in the stratosphere?
The stratosphere is where you'll find the very important ozone layer. The ozone layer helps protect us from ultraviolet radiation (UV) from the sun. In fact, the ozone layer absorbs most of the UV radiation the sun sends to us.
Where is the thickest ozone layer?
the poles The amount of ozone above a location on the Earth varies naturally with latitude, season, and from day-to-day. Under normal circumstances, the ozone layer is thickest over the poles and thinnest around the equator.
Where is the highest UV in the world?
Map of peak UVI, using a modified colour scale to highlight the absolute peaks. Figure 2 uses a modified colour scale and shows that the highest values of UVI occur in the Peruvian Andes and throughout the Altiplano region. The maximum UVI of 25 is for the grid cell at 13.5° S, 172° W, centred on Cuzco in Peru.
What place has the highest UV index?
Revealed: The Travel Hotspots That Could Be Damaging to Your Health
| # | Country | Average UV Index |
|---|---|---|
| 1 | Sri Lanka | 11.75 |
| 2 | Nigeria | 11.67 |
| 3 | Thailand | 11.33 |
| 4 | Barbados | 11.33 |
Which country has the lowest UV rays?
In contrast, the safest countries are found in Scandinavia, with Finland boasting the lowest average (2.17) and Sweden (2.25), Norway (2.25) and Denmark (2.67) not far behind….Revealed: The Travel Hotspots That Could Be Damaging to Your Health.
| # | 3 |
|---|---|
| Country | Thailand |
| Average UV Index | 11.33 |
| UK visitors in 2019 | 389,000 |
What is in mesosphere?
Most meteors vaporize in the mesosphere. Some material from meteors lingers in the mesosphere, causing this layer to have a relatively high concentration of iron and other metal atoms.
Which layer of Earth’s atmosphere contains the highest concentration of ozone?
Most atmospheric ozone is concentrated in a layer in the stratosphere, about 9 to 18 miles (15 to 30 km) above the Earth's surface (see the figure below). Ozone is a molecule that contains three oxygen atoms. At any given time, ozone molecules are constantly formed and destroyed in the stratosphere.
Why is ozone only in the stratosphere?
Ozone in the stratosphere absorbs most of the ultraviolet radiation from the Sun. Without ozone, the Sun's intense UV radiation would sterilize the Earth's surface. Ozone screens all of the most energetic, UV-c, radiation, and most of the UV-b radiation.
What country is most affected by the ozone hole?
Countries that are affected by it the most are Argentina, Chile, South Africa, New Zealand and Australia. The largest ozone hole ever observed in the Antarctic was reported by NASA in September 2000. The hole spread out over 28.3 million square miles, more than three times larger than the United States.
Which country has the biggest hole in the ozone layer?
A NASA instrument has detected an Antarctic ozone "hole" (what scientists call an "ozone depletion area") that is three times larger than the entire land mass of the United States—the largest such area ever observed.
Where is ozone layer located?
the stratosphere The Earth's ozone layer. The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth's surface, in the stratosphere.
Which layer protect us from the harmful ultraviolet rays of the sun?
The stratospheric ozone layer 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.
Do planes fly in the stratosphere?
Commercial jet aircraft fly in the lower stratosphere to avoid the turbulence which is common in the troposphere below. The stratosphere is very dry air and contains little water vapor. Because of this, few clouds are found in this layer and almost all clouds occur in the lower, more humid troposphere.
What is above the stratosphere?
The region above the stratosphere is called the mesosphere. Here the temperature again decreases with height, reaching a minimum of about -90°C at the "mesopause".
Is UV higher near the equator?
UV levels are higher closer to the equator. Closer to the equator the sun's rays have a shorter distance to travel through the atmosphere and therefore less of the harmful UV radiation can be absorbed. With increasing altitude less atmosphere is available to absorb UV radiation.
Where is the highest UV index in America?
Effect of Sun Protection and the UV Index
- The southern states, California, and especially Hawaii, are closest to the equator and tend to have a higher UV Index.
- States at a high altitude, such as Utah and Colorado, also tend to have a relatively high UV Index.
What is the highest UV ever recorded?
A "perfect storm" of ozone-destroying chemicals sent cancer-causing UV-B radiation soaring at the top of a South American volcano in 2003, a new study reports. On Dec. 29, 2003, a world-record UV index of 43.3 was detected at Bolivia's Licancabur volcano.
Where is the sun most intense on Earth?
In general, the sun's rays are the most intense at the equator and the least intense at the poles. On an average yearly basis, areas north of the Arctic Circle receive only about 40 percent as much solar radiation as equatorial regions.