U4 Design and Technology Exam Preparation

These flashcards cover key concepts and important terms related to the U4 Design and Technology curriculum and examination preparation.

What is the primary source of most plastics?

Most plastics come from crude oil.

What process is used to separate products from crude oil?

Fractional distillation.

What are thermoplastics known for?

They are soft, flexible, and have shape memory.

How do thermosetting plastics differ from thermoplastics?

Thermosets are more brittle and suited for stiffer mouldings.

What are some examples of thermoplastics?

Acrylic (PMMA), high impact polystyrene (HIPS), high density polythene (HDPE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET).

What ethical issues surround the production of synthetic plastics?

Pollution, finite resource consumption, energy usage contributing to global warming.

How do plastic products contribute to environmental issues at the end of their life?

They do not rot or corrode, adding to landfill and harming wildlife.

What are some methods to shape plastics?

Line bending, 3D printing, vacuum forming, laser cutting, blow moulding, injection moulding.

How does the vacuum forming process work?

A thermoplastic sheet is heated, then formed over a mould with air pumped out.

What factors should designers consider when creating ergonomic products?

Comfort, functionality, interaction, physical and emotional connection to the product.

What are some types of timber joints?

Butt joint, Mitre joint, Lap joint, Finger joint.

What is the formula for calculating area?

Area = length x width.

What is the formula for calculating volume?

Volume = length x width x height.