Practice Exam Questions Flashcards
1
Q
Define the term composite (2 marks)
A
Two or more materials that are bonded together (1)
to give properties that are better than the individual materials used to make it. (1)
2
Q
Name two composite materials (2 marks)
A
Any two answers.
- Reinforced concrete
- Aluminium composite board
- Fibre cement
- Engineered wood
- Concrete
3
Q
State how epoxy resin used in the production of CFRP (Carbon fiber reinforced polymers) (1 mark)
A
Epoxy resin is used to hold the carbon fibre layers together/in place
4
Q
Why is CFRP (Carbon fiber reinforced polymers)
used for suitcases? (2 marks)
A
- lightweight - plane weight limit
- tough - so won’t get scratches and tears
5
Q
Tungsten carbide is a cermet. Explain what this term means (2 marks)
A
A cermet is a composite material (1 mark)
made from ceramic and metal (1 mark)
6
Q
Why is Tungsten Carbide good for cutting things? (2 marks)
A
- Hard - so stays sharp for long
- Tough - less likely to shatter
