Which of the following is an example of an alloy?
Mild steel
Pewter
Copper
Why are hardwoods less sustainable than other types of wood?
They come from further away and have to be transported
There are not that many hardwood trees
They take longer to grow and so take longer to harvest
Why are thermosetting plastics used in electrical fittings?
Because they are a cheap material and they are plentiful
Because they are resistant to heat and don’t conduct electricity
Because they can be moulded into a wide variety of shapes
Plywood is an example of which type of wood?
Manufactured board
Hardwood
Softwood
Why are non-ferrous metals commonly used in manufacturing?
They contain no iron and are less prone to rust and corrosion
They can be used to create steel that is used in construction
They are cheaper since they are made by combining other elements