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Flip to reveal answersName the impact categories an LCA measures.
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All 4 Flashcards — The five LCA stages
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Question
Name the impact categories an LCA measures.
Answer
Global warming potential, air pollution, water pollution, soil pollution, ecotoxicity, and resource depletion.
Question
Why is global warming potential given in CO₂ equivalent?
Answer
Different gases trap different amounts of heat, so each is converted into the mass of CO₂ that would do the same damage, which lets a single total be quoted.
Question
Give an LCA result that contradicts a common assumption.
Answer
A cotton tote must be reused dozens of times before it beats a thin plastic bag, because growing and processing cotton is far more damaging per bag.
Question
Why does the boundary of an LCA matter?
Answer
Where it starts and stops decides the answer. Leave out extraction and a recycled product looks free; leave out use and an inefficient appliance looks harmless.
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Topic 11.2 hub
Life-cycle analysis
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