Wood, Metals And Plastics

Question 0

Explain what are processed woods?

Answer 0

They come from factories.
They com in sheets of different sizes and thicknesses.
Has chemicals added to manipulate its properties.
It’s a way of recycling off-cuts.

Question 1

Explain what are natural woods?

Answer 1

They come directly from trees.

They come in the shape of veneers.

Question 2

Describe hardwoods?

Answer 2

High density.
Expensive.
Dark in color.
Comes from warm regions.
Eg. Ebony

Question 3

Describe softwoods?

Answer 3

Less dense.
Cheaper than hardwood.
Light in color.
Comes from cool regions.
Eg. Pine

Question 4

What do all carbon steels have?

Answer 4

A percentage of carbon and iron.

Question 5

Explain low carbon steel.

Answer 5

A.K.A mild steel.
Very malleable.
Cheap.
Eg. Screws, wire etc…

Question 6

Explain medium carbon steel?

Answer 6

Harder than LCS.
More malleable than HCS.
Eg. Hammerheads, springs etc…

Question 7

Explain high carbon steel?

Answer 7

A.K.A tool steel.
Very hard and tough.
Difficult to produce.
Eg. Blades, files etc…

Question 8

Explain thermoplastics against thermosets?

Answer 8

Thermoplastics heat up and eventually melt whereas thermosets burn into toxic fumes when exposed to high temperatures.

Question 9

What are acrylic plastics?

Answer 9

They are transparent.
Available in different colours.
Surface can be scratched easily.