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Ozone Depletion and Regulations Flashcards

7 cards from real EPA 608 609 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which atmospheric layer contains the ozone that protects life from harmful ultraviolet radiation?

    Answer: Stratosphere

    The protective ozone layer is located in the stratosphere.

  2. What element released from CFCs is primarily responsible for destroying ozone molecules?

    Answer: Chlorine

    Chlorine atoms released from CFCs catalytically destroy ozone.

  3. A single chlorine atom can destroy approximately how many ozone molecules before becoming inactive?

    Answer: Up to 100,000

    One chlorine atom can destroy up to 100,000 ozone molecules in a catalytic cycle.

  4. Which international agreement first set a schedule to phase out ozone-depleting substances?

    Answer: Montreal Protocol

    The Montreal Protocol of 1987 established the phaseout of ozone-depleting substances.

  5. Under U.S. regulations, what is the common term for the rating that compares a substance's ozone destruction to CFC-11?

    Answer: Ozone Depletion Potential

    Ozone Depletion Potential (ODP) measures a substance's ozone harm relative to CFC-11.

  6. Which section of the Clean Air Act governs the handling and recovery of refrigerants?

    Answer: Section 608

    Section 608 of the Clean Air Act regulates stationary refrigerant handling.

  7. Increased exposure to UV-B radiation from ozone depletion is most directly linked to which human health risk?

    Answer: Skin cancer

    Higher UV-B exposure increases the incidence of skin cancer and cataracts.