Back to Topic 11.2 — Life-cycle analysis
11.2.2Design Technology HL4 flashcards

Cradle to grave

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Card 1 of 411.2.2
11.2.2
Question

Name the five cradle-to-grave stages.

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All 4 Flashcards — Cradle to grave

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Card 1definition

Question

Name the five cradle-to-grave stages.

Answer

Raw material extraction, manufacture, distribution and transport, use and maintenance, and disposal and recycling.

Card 2concept

Question

Which stage dominates, and how do you tell?

Answer

For a powered product, use. For a passive one, extraction. Ask whether the product consumes anything while it works.

Card 3definition

Question

What is the difference between cradle to grave and cradle to cradle?

Answer

Cradle to grave ends at disposal. Cradle to cradle recovers the material so it re-enters the first stage of the next product.

Card 4concept

Question

Why is a longer life usually the largest saving?

Answer

Doubling a working life halves the impact of everything that made it, per year of service — which almost no material substitution can match.

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