OZONE Flashcards
What is Ozone Depletion?
Ozone depletion refers to the thinning and reduction of the ozone layer in the Earth’s stratosphere, which protects us from harmful UV radiation.
Quote on Ozone Depletion
“As we destroy the ozone layer, we expose ourselves to increased ultraviolet radiation, which is like playing Russian roulette with our health.” – David Suzuki
What are Chlorofluorocarbons (CFCs)?
CFCs are found in refrigerants, aerosols, and solvents. When broken down by UV light, they release chlorine atoms that destroy ozone molecules.
What are Halons?
Halons, used in fire extinguishers, release bromine atoms, which are even more destructive to ozone than chlorine.
What is the role of Nitrous Oxide in ozone depletion?
Nitrous oxide emissions from fertilizers and industrial processes contribute significantly to ozone layer depletion.
What is Methyl Bromide?
Methyl Bromide, used as a pesticide, releases bromine that damages the ozone layer.
What are Hydrochlorofluorocarbons (HCFCs)?
HCFCs are less harmful alternatives to CFCs but still contribute to ozone depletion.
What are the health impacts of Ozone Depletion?
Increased UV exposure can lead to higher rates of skin cancer, cataracts, and weakened immune systems.
What are the environmental impacts of Ozone Depletion?
UV radiation disrupts phytoplankton in oceans, affecting the food chain, and damages crops, reducing agricultural productivity.
How is Ozone Depletion connected to Global Warming?
Ozone depletion and global warming are interconnected as gases harming the ozone layer are potent greenhouse gases.
How can we control Ozone Depletion? (List 3 ways)
- Ban harmful substances like CFCs and halons. 2. Adopt environmentally friendly alternatives. 3. Promote public awareness.
What is the Montreal Protocol (1987)?
An international treaty to phase out the production and consumption of ozone-depleting substances, considered highly successful.
How do technological innovations help control Ozone Depletion?
Industries have developed alternatives to harmful chemicals like HCFCs and CFCs, reducing ozone depletion.
How is the ozone layer monitored today?
Organizations like UNEP continuously monitor the recovery of the ozone layer.
UN SG Kofi Annan
s former U.N. Secretary-General Kofi Annan said, “The Montreal Protocol is proof that when we work together, we can overcome global challenges.
