AQA A-Level Design and Technology: Product Design 3.1 Technical principles overview quiz quiz

Toughness

Density

Electrical conductivity

Transparency

Thermoforming polymers are always far stronger and stiffer than any thermosetting polymer

Thermoforming polymers can be reheated and reshaped, thermosetting polymers cannot

Thermosetting polymers are recyclable, thermoforming polymers are not

There is no real difference, since the two terms are completely interchangeable

Seasoning to remove moisture content

Anodising the outer surface layer

Hardening and tempering

Varnishing for a protective finish

It uses cheap, flexible tooling that can be changed quickly

It is the only manufacturing process that can ever work with thermoplastic polymers

It produces individual parts far more slowly than 3D printing does

The expensive die cost is only economic when spread over very high volumes

A material that changes a property in response to an external stimulus

Any newly invented or recently developed material

A material that is fully recyclable and biodegradable

A modern composite material with a very high strength-to-weight ratio overall

It melts completely

It returns to a memorised shape

It changes colour permanently

It generates an electric voltage

Additive removes material from a blank, while CNC machining adds it

They are simply two different names for one and the same process

Additive builds a part up layer by layer, CNC removes material from a blank

Additive can only ever use metal, while CNC machining can only ever use plastic

Linear, circular, vertical and horizontal motion

Push, pull, twist and bend motion

Forward, backward, up and down motion

Linear, rotary, reciprocating, oscillating

Reciprocating motion

Steady linear motion in a straight line

Oscillating swinging motion

Continuous rotary motion

It turns three times faster with less torque

It turns three times slower with three times the torque

It turns at the same speed as the driver

It turns three times faster with three times the torque

Coal

Natural gas

Wind

Nuclear fuel

Varnish, as used to seal timber surfaces

Anodising the bare steel surface directly

Oiling the metal with a thin protective layer

Galvanising or powder coating