How does CFC deplete ozone?
How does CFC deplete ozone?
Once in the atmosphere, CFCs drift slowly upward to the stratosphere, where they are broken up by ultraviolet radiation, releasing chlorine atoms, which are able to destroy ozone molecules. When sunlight returns in the spring, the chlorine begins to destroy ozone.
What are some of the impacts of a thinning ozone layer quizlet?
Depletion of the ozone layer has consequences on humans, animals and plants. This typically results from higher UV levels reaching us on earth. Research confirms that high levels of UV Rays cause non-melanoma skin cancer. One chlorine atom can break apart more than 100,000 ozone molecules.
Which contributes to the ozone hole?
Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere (see details below). CFCs and halons cause chemical reactions that break down ozone molecules, reducing ozone’s ultraviolet radiation-absorbing capacity.
What are the dangers associated with a hole in the ozone layer?
Ozone layer depletion causes increased UV radiation levels at the Earth’s surface, which is damaging to human health. Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders.
What is the advantage and disadvantage of ozone?
Advantage of Ozone–When it is in the stratosphere it does not allow the ultraviolet radiations to reach the earth as UV radiations cause skin cancer and cataract. Disadvantage of ozone: On ground level ozone is poisonous gas.
What is ozone layer and its advantages and disadvantages?
Advantage and Disadvantages :Ozone occurs in 2 layers of the atmosphere. 1. Disadvantage : In troposphere layer bad ozone is present which act as an air pollutant which is very harmful to breathe and also it damages the crops in field and other vegetation.
Why is ozone bad for humans?
How is Ozone Harmful? When inhaled, ozone can damage the lungs. Relatively low amounts can cause chest pain, coughing, shortness of breath and throat irritation. Ozone may also worsen chronic respiratory diseases such as asthma and compromise the ability of the body to fight respiratory infections.
What is a dangerous level of ozone?
The NIOSH recommended exposure limit for ozone is 0.1 ppm (0.2 mg/m3). According to NIOSH, Ozone levels of 5 ppm or higher are considered immediately dangerous to life or health.
Who is most susceptible to high levels of ozone exposure?
People most at risk from breathing air containing ozone include people with asthma, children, older adults, and people who are active outdoors, especially outdoor workers.
How can you protect yourself from ground-level ozone?
What You Can Do
- Stay indoors. Avoid spending too much time outdoors on high-level ozone days.
- Timing is everything. Gas up your vehicle in the early morning or late evening hours and mow your lawn later in the evening.
- Limit driving. Use public transit or carpool whenever possible.
- Conserve energy.