Worksheets9E Use of materials
Total questions: 16
Worksheet time: 25mins
Name
Class
Date
1.
What does 'brittle' mean?
a)
Soft
b)
Easily breakable
c)
Easily bendable
d)
Tough
2.
Which of these properties do ceramics possess?
a)
Light
b)
Very fragile
c)
Strong hardness
d)
Flexible
3.
What is a disadvantage of ceramics?
a)
Ceramics are tough.
b)
Clay is easy to obtain.
c)
They can be painted.
d)
They can fracture easily.
4.
Because of their strong bonds, ceramics are...
a)
Electrically resistant
b)
Elastic
c)
Heat resistant
d)
Magnetic
5.
Are ceramics...
a)
Good insulators
b)
Good conductors
6.
Which of these objects is a ceramic?
a)
Brick
b)
Pylon
c)
Water bottle
d)
Tarmac
7.
Large molecules made up of smaller molecules.
a)
monomer
b)
polymer
c)
hydrocarbon
d)
plastic
8.
Which is not an example of a natural polymer
a)
silk
b)
wool
c)
cotton
d)
plastic
9.
The process by which polymers and plastics are made
a)
polymerization
b)
vulcanization
c)
PVA
d)
PMMA
10.
What is a polymer?
a)
a group of atoms
b)
a long chain molecule with identical group of atoms
c)
a long chain of molecules
d)
a long chain of different atoms
11.
What is a solid material which contains two or more substances of different physical characteristics?
a)
Lamination
b)
Compote
c)
Composite
d)
Mixture
12.
The ____________ is the material used to make the composite stronger.
a)
Matrix
b)
Reinforcement
c)
Wood Glue
d)
Composite
13.
The most commonly used composite material in the world is _________________
a)
Slime
b)
Glue
c)
Concrete
d)
Steel
14.
Composite material is used when filling a cavity in your mouth.
a)
True
b)
False
15.
Which of the following is not a cause of acid rain?
a)
Volcanic Eruptions
b)
Burning of fossil fuels
c)
electric cars
d)
combustion engins
16.
Pollution causes the pH of rain water fall below 6. What is such type of rain called?
a)
Acid rain
b)
Low PH rain
c)
High PH rain
d)
Polluted rain
100 %
