OCR GCSE Design and Technology material considerations overview quiz quiz

The colour of the material and its surface finish quality

The recyclability rating set by the supplier

The cost per sheet at the printer

The weight (grams per square metre)

Corrugated card

Tracing paper

Bleed-proof paper

Layout paper

Coniferous (evergreen) trees

Broadleaved (deciduous) trees

Only tropical trees

Trees with the hardest wood, whatever the type

It is always stronger than any solid timber, in every direction

It is a natural hardwood cut straight from a single broadleaved tree

It comes in large stable sheets with no grain direction or knots

It cannot be painted, stained or veneered at all

Ferrous metals are always stronger and harder than non-ferrous metals in absolutely every use

Non-ferrous metals are always far cheaper to buy because they never need any protective coating at all

There is no real difference between them; the two terms mean exactly the same thing in practice

Ferrous metals contain iron (and usually rust and are magnetic); non-ferrous metals contain no iron

Stainless steel

Pure copper metal

Pure aluminium element

Pure iron

It softens and can be reshaped again each time it is gently heated

It sets hard permanently and cannot be reshaped once cured

It is always transparent and colourless once moulded

It can always be recycled simply by melting it back down

It is brittle so it snaps cleanly along a scored line every single time you open the lid

It sets permanently like a thermoset polymer and cannot bend, flex or ever be reshaped at all

It is tough and flexes without cracking, so it can form a sealing hinge, and it is recyclable

It is the heaviest and densest plastic available for moulded products

To make the shirt far cheaper to produce than any single other fabric available anywhere on the market today

Because cotton on its own simply cannot be woven, sewn or used in school shirts at all without help

To make the shirt completely waterproof so that it sheds rain like a sealed plastic raincoat would

To combine cotton's comfort and breathability with polyester's strength, crease resistance and quick drying

Diode

Resistor

Capacitor

Transistor

It stores electrical charge and then releases it slowly to smooth out the supply voltage over time

It acts as an electronic switch, turning an output on when the input reaches a threshold

It senses changes in the surrounding light or heat and converts those changes into an input voltage

It limits the amount of current flowing to an LED so that the LED is not damaged by overload

2 pounds

4 pounds

3 pounds

8 pounds