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WorksheetsModern and Smart Materials
Total questions: 3
Worksheet time: 2mins
Name
Class
Date
1.
Which property makes carbon fibre suitable for racing bicycles and aerospace vehicles?
a)
High thermal expansion under heat
b)
Low weight with high tensile strength
c)
High density with low stiffness
d)
Poor chemical resistance to corrosion
2.
Kevlar is best described as a synthetic fibre that is:
a)
Heat resistant and able to stop bullets
b)
Heavy and easily corroded by moisture
c)
Rigid and difficult to weave into shapes
d)
Conductive and used for electrical switches
3.
What happens to Quantum Tunnelling Composite (QTC) when compressed?
a)
It becomes an electrical conductor
b)
It melts into a liquid polymer
c)
It loses all mechanical strength
d)
It insulates more effectively
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