What is the life cycle of a product, and how can designers reduce its environmental impact using the 6 Rs?
Sustainability and the product life cycle: the stages of a product's life (raw materials, manufacture, distribution, use, disposal/re-use), the environmental impact at each stage, and reducing impact through the 6 Rs (reduce, reuse, recycle, refuse, rethink, repair).
A focused answer to the SQA National 5 Design and Manufacture content on sustainability, covering the stages of a product's life cycle from raw materials to disposal, the environmental impact at each stage, and reducing impact through the 6 Rs.
Reviewed by: AI editorial process; not yet individually human-reviewed
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What this dot point is asking
The SQA wants you to know the life cycle of a product - from raw material to disposal - and how a designer reduces its environmental impact using the 6 Rs. Sustainability links back to the environmental design factor: it is examined as a sequence of stages and as a set of design choices.
The product life cycle
Thinking about the whole life cycle shows where the environmental impact really lies - sometimes in manufacture, sometimes in use or disposal.
Environmental impact at each stage
Every stage has an impact:
- Raw materials: depletes natural resources; extraction damages habitats and uses energy.
- Manufacture: consumes energy and water; produces waste, emissions and pollution.
- Distribution: burns fuel in transport; creates packaging waste.
- Use: may consume energy or create waste (e.g. batteries, refills).
- Disposal: landfill waste; pollution if materials do not break down or are not recycled.
A good designer tries to reduce the impact at the stage where it is greatest.
The 6 Rs
Applying the 6 Rs at the design stage has the biggest effect, because most of a product's environmental impact is locked in by early design decisions (which materials, how much, how it is powered, whether it can be recycled).
Try this
Q1. Name the five stages of a product's life cycle. [2 marks]
- Cue. Raw materials, manufacture, distribution, use, disposal/re-use.
Q2. State what "reduce" means as one of the 6 Rs. [1 mark]
- Cue. Designing the product to use less material and/or energy.
Q3. Explain why recycling a product reduces its environmental impact. [2 marks]
- Cue. Materials are reprocessed into new products instead of going to landfill, so fewer raw materials are extracted and less waste is created.
Exam-style practice questions
Practice questions written in the style of SQA exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
SQA-style Describe4 marksDescribe the stages of the life cycle of a product.Show worked answer →
Award 1 mark per stage described, up to 4. Raw materials: the materials are extracted or grown and processed, using energy and resources (1). Manufacture: the materials are made into the product in a factory, using energy and producing waste and emissions (1). Distribution and use: the product is packaged and transported to the customer and then used, which may use energy (for example, electricity) during its life (1). Disposal or re-use: at the end of its life the product is thrown away, recycled, reused or repaired (1). Markers reward a logical sequence of stages described, not just single words.
SQA-style Explain3 marksExplain how a designer could use the 6 Rs to reduce the environmental impact of a product.Show worked answer →
Award up to 3 marks for explained points using the 6 Rs. Reduce: design the product to use less material or energy, so fewer resources are consumed and less waste is made (1). Recycle: choose materials that can be recycled, and design the product so parts can be separated easily at the end of life, so material is not lost to landfill (1). Reuse or repair: design the product so it, or its parts, can be used again or easily repaired, extending its life and avoiding replacement (1). Other valid Rs are refuse (avoid unnecessary materials) and rethink (redesign the whole approach). Markers reward named Rs explained with their environmental effect.
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