A company carries out a life cycle assessment for one wooden garden bench.
| Stage | Energy used excluding transport in MJ | Energy used by transport in MJ |
|---|---|---|
| Obtaining raw materials | 320 | 28 |
| Manufacturing and packaging | 460 | 16 |
| Use | 40 | 12 |
| Disposal | 80 | 24 |
An assessor says, ‘Transport accounts for less than 10% of the total energy used, so transport can be left out of the life cycle assessment.’
Evaluate the assessor’s decision. Use calculations in your answer.
99 exam-style questions on AQA GCSE Chemistry 10.2 Life cycle assessment and recycling, covering 10.2.1 Life cycle assessment and 10.2.2 Ways of reducing the use of resources. Each one has a worked solution and a mark scheme showing where the marks go.