Table of Contents
How is good ozone formed quizlet?
Ozone is formed in the stratosphere by the reaction of ultraviolet radiation striking an oxygen molecule. This results in the oxygen molecule splitting apart and forming atomic oxygen (O2 + hv = O + O). Atomic oxygen can now react with molecular oxygen to form ozone (O+O2 = O3).
What causes stratospheric ozone?
Stratospheric ozone is constantly produced by the action of the sun’s ultraviolet radiation on oxygen molecules (known as photochemical reactions). Polar stratospheric clouds create the conditions for drastic ozone destruction, providing a surface for chlorine to change into ozone-destroying form.
Why is stratospheric ozone good quizlet?
Why is stratospheric ozone important? The stratospheric ozone is important because it absorbs large amounts of UV. The intense UV radiation is harmful to life on planet earth as it causes skin cancer and damages DNA. It also causes phytoplankton to move lower in the water, which reduces productivity.
How is ozone formed in the troposphere quizlet?
The majority of tropospheric ozone formation occurs when nitrogen oxides (NOx), carbon monoxide (CO) and volatile organic compounds (VOCs), react in the atmosphere in the presence of sunlight, specifically the UV spectrum. You just studied 9 terms!
How do Chlorofluorocarbons CFCs contribute to ozone depletion?
Ozone Depletion Ozone is destroyed by chlorofluorocarbons (CFC’s). CFC’s breakdown and release chlorine atoms which combine with O3 and break them down to O2. , CFCs drift slowly upward to the stratosphere, where they are broken up by ultraviolet radiation, releasing the chlorine that catalytically destroys ozone.
How does the ozone layer affect life on Earth Brainly?
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 stratospheric ozone responsible for?
Stratospheric ozone is a naturally occurring gas that filters the sun’s ultraviolet ( UV. A diminished ozone layer allows more UV radiation to reach the Earth’s surface.
Why is stratospheric ozone beneficial to life on Earth quizlet?
ozone in the stratosphere is good for humans because it blocks UV radiation, but when it is present in the troposphere, it is bad for humans and acts as a greenhouse gas. tropospheric ozone is contributed by humans through pollution.
Why is the stratospheric ozone layer important to ecosystems?
How is ozone good and bad for Earth?
Ozone occurs in two layers of the atmosphere. The layer closest to the Earth’s surface is the troposphere. Here, ground-level or “bad” ozone is an air pollutant that is harmful to breathe and it damages crops, trees and other vegetation. The stratospheric or “good” ozone protects life on Earth from the sun’s harmful ultraviolet (UV) rays.
What is dangerous ozone level?
Levels of ozone under 0.045 ppm are considered good, while a moderate level of ozone is between 0.045-0.075 ppm. For at risk groups, an ozone level over 0.075-0.105 ppm can be dangerous. A reading of over 0.105 ppm indicates an unhealthy or dangerous level of ozone.
How is ozone created naturally?
Ozone is created naturally in the stratosphere by the combining of atomic oxygen (O) with molecular oxygen (O 2). This process is activated by sunlight. Ozone is destroyed naturally by the absorption of ultraviolet radiation, and by the collision of ozone with other atmospheric atoms and molecules.
Which gas in Earth’s atmosphere forms ozone?
ozone layer contains high concentrations of ozone (O3) in relation to other parts of the atmosphere.Hence oxygen gas in earth’s atmosphere forms ozone.