TEST TUBE 3. Research what the following disposal symbols mean: a. The Mobius Loop b. The Green Dot
c. The WEEE symbol
d. The Tidyman
4. a. Carry out a life cycle assessment of a product of your choice. • How are the raw materials for this product extracted? • How is this product manufactured? • How is it packaged and distributed? • How is it used? • How can it be disposed of? Is it recyclable?
b. Comment on the product’s impact on the environment. What could be done to reduce its environmental impact?
Summary questions
1. a. Explain the difference between a natural and synthetic material. b. Give two examples of a natural material and two examples of a synthetic material.
2. Name and explain the different stages involved in the product life cycle.
3. For each of the five stages in the product life cycle, outline how it can have a negative impact on the environment.
4. For each of the five stages in the product life cycle, outline how it could be changed to have less of an impact on the environment.
5. Explain the term ‘biodegradable’. 6. Copy and complete the following table in relation to disposal of materials:
Method of disposal
Landfill Incineration Recycling Composting
7. Divide the following materials into materials that should be recycled, composted or disposed of in general waste:
a. leaf b. plastic straw c. newspaper d. fruits and vegetables