Ozone in the stratosphere is produced by the help of uv radiations. It protects us from harmful uv radiations. Explain with chemical equation, the destructio
In 1974, modelling first pointed to increasing levels of chlorofluorocarbons (CFCs, which were often used in aerosol spray cans, foams and cooling devices) as a source of chlorine radicals in the stratosphere that could catalytically destroy ozone5. The dramatic discovery in the mid-1980s of the...
The ___ of ozone layer in the stratosphere is mainly caused by certain chemicals. A. depletion B. description C. development D. distribution 相关知识点: 试题来源: 解析 A。解析:本题考查名词辨析。A选项depletion表示消耗、损耗,平流层中臭氧层的损耗主要是由某些化学物质引起的,这是环境问题中的一...
WHEN the possibility of anthropogenic ozone depletion was first identified, it was thought that it would occur primarily in the upper stratosphere, at altitudes near 42 km. It is now recognized that ozone losses due to heterogeneous reactions involving chlorine and bromine1are greatest in the lower...
How is ozone formed in the stratosphere? 02:48 What are the reactions involved for ozone layer depletion in the strat... 03:47 State two effects of ozone depletion. 02:32 Greenhouse effect is 03:04 Define water pollution and name the common water pollutants. 06:35 What is soil pollution...
The ozone layer is in the ___. A. troposphere B. stratosphere C. mesosphere D. thermosphere 相关知识点: 试题来源: 解析 B。解析:文中提到“The stratosphere is above the troposphere. This layer contains the ozone layer.”,可知臭氧层在平流层。反馈 收藏 ...
The occurrence of a total eclipse at Tartagal, Argentina, on November 12, 1966, prompted a rocket sounding experiment to determine temperature, wind, and ozone perturbations in the stratosphere caused by the eclipse. Soundings were made in the 65- to 30-km region of the atmosphere before, duri...
aOne of the most significant photochemical reactions is the one responsible for the presence of ozone in the stratosphere (see above), which is initiated when O2 absorbs highly energetic ultraviolet radiation in the stratosphere to form oxygen atoms, which react further to produce ozone, O3. 其中...
The ongoing reduction of ozone in the stratosphere. Ozone (O3) is present in 1 ppm in the upper stratosphere, and it absorbs virtually all of the UV radiation from the sun; increased rates of sun-induced malignancies (e.g., melanomas) have been attributed to the destruction of the ozone...
On Earth, the stratospheric ozone layer is found at an altitude from 20 to 40 km. It is created when ultraviolet radiation from the Sun strikes the oxygen molecules in the stratosphere. By this... This is a preview of subscription content,log in via an institution ...