All Flashcards
What is the purpose of the Montreal Protocol?
International treaty to phase out the production and consumption of ozone-depleting substances (ODS).
What is the purpose of the Clean Air Act (USA)?
Federal law regulating ODS production and use, setting limits and phase-out requirements in the USA.
What is the purpose of the EU Regulation on ODS?
Sets limits on ODS within European Union member states, similar to the Clean Air Act in the USA.
What is the ozone layer?
Region in Earth's stratosphere with high ozone (O₃) concentration; absorbs harmful UV radiation.
What are Ozone-Depleting Substances (ODS)?
Chemicals that break down ozone molecules, thinning the ozone layer (e.g., CFCs, HCFCs, halons).
What are Chlorofluorocarbons (CFCs)?
ODS used in refrigerants, aerosols, and foam products; major cause of ozone depletion.
What are Hydrochlorofluorocarbons (HCFCs)?
Transitional replacement for CFCs; still harmful to the ozone layer.
What are Halons?
ODS used in fire extinguishers; contribute to ozone depletion.
What are Hydrofluorocarbons (HFCs)?
Chemicals used as replacements for ODS; do not deplete ozone but are potent greenhouse gases.
What is the Montreal Protocol?
International treaty to phase out ODS production and consumption.
Define UV radiation.
Harmful radiation from the sun that the ozone layer absorbs.
Define greenhouse gas.
Gases that trap heat in the atmosphere, contributing to global warming.
Define mitigation.
Actions taken to reduce the severity of environmental problems.
How can reducing ODS consumption help protect the environment?
Decreases ozone depletion, protecting against harmful UV radiation.
How does supporting ODS phase-out policies promote sustainability?
Encourages the use of ozone-friendly alternatives and reduces ozone depletion.
How does energy efficiency contribute to ozone layer protection?
Reduces fossil fuel use, indirectly lowering ODS emissions.