Practice IB Design Technology (DT) Topic 2.5 Green Design with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for 2.5 Green Design and mirrors Paper 1, 2, 3 style where relevant.
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A manufacturer of bottled water switches from round bottles to square bottles to allow more units to be packed into each shipping crate, thereby reducing the fuel consumption and emissions of their delivery fleet. Which stage of the green design life cycle does this initiative primarily target?
A paper mill installs a secondary treatment facility to neutralize the acidity of its wastewater before it is discharged into a local river. Which green design strategy is being implemented in this scenario?
A company is developing a new line of eco-friendly sportswear. The sportswear needs to be both functional and sustainable.
The design team must consider various properties of textiles and their impact on performance and the environment. The following questions will explore different aspects of textile selection and application in sportswear design.
Identify two natural fibres commonly used in eco-friendly sportswear and discuss their suitability.
Explain the importance of moisture-wicking properties in sportswear textiles.
Compare the environmental impact of natural fibres versus synthetic fibres used in sportswear.
The diagram below shows the internal structure of a high-performance sportswear textile designed for moisture management. Label the parts A, B, and C and explain their functions.
Some villages near Siem Reap in Cambodia have problems with waste, in this case plastic bags, polluting the landscape.
Salin and Michael of the Treak Community Centre near Siem Reap have developed an innovative way of dealing with the issue of plastic bag waste.
Plastic bags collected by the Treak community are placed on a bed of sand that is heated by a fire. This shrinks the bags and makes them stiffer. The bags are then shredded into small chunks with scissors, see Figure 10. The shredded plastic is then used as a substitute for aggregate in concrete which is mixed by hand, see Figure 11. This concrete is then moulded into bricks, see Figure 12 and Figure 13, that can be used for construction.
40% of the bricks used for the Treak Community Centre were made using this method. The remaining 60% of bricks are standard clay construction bricks.
Outline why these bricks are an example of a composite material.
Designers use specifications to guide development and evaluation. Suggest the cost constraints and material requirements for the Treak Village plastic brick.
Explain why prototypes would be used in the testing and evaluation of the brick made by the Treak community.
Explain how the manufacture of the Treak Village plastic brick addresses the green design objectives of materials, energy and waste.