Properties of Materials Flashcards
1
Q
Define strength
A
the ability to withstand forces without breaking for example the rope in a tug of war or a drill bit resisting twisting forces
2
Q
Define hardness
A
the ability to withstand scratching, rubbing or denting.
3
Q
what property would it be important for files and drills to have?
A
they need to be hard
4
Q
define placticity
A
if a material can change shape permanently without breaking or cracking
5
Q
Give an example of a brittle material
A
glass
6
Q
what is the opposite of brittle?
A
tough- a material is tough if it can absorb impacts without breaking or snapping
7
Q
Describe what is meant by malleable
A
if a material can be moulded e.g. by hammering
8
Q
what properties would a plastic slide have?
A
- plasticity (moulded into shape)
- tough (absorb the impact of children jumping on it)
- hard (it doesn’t want to scratch or dent in use)
- it needs to be strong so it can withstand the forces of children playing on it
