Worksheetschemistry form 4 chapter 8.4
Total questions: 10
Worksheet time: 6mins
A composite material is a
material made from combining two or more non-homogeneous substances, that is matrix substance and strengthening substance.
material made from combining two or more homogeneous substances, that is matrix substance and strengthening substance.
material made from metal and non-metal.
a composite material have
have same physical and chemical properties.
have different physical but same chemical properties.
have different physical and chemical properties.
The composite material formed has ____ properties than the original components.
better
worse
Reinforced concrete is produced when
steel bars or wire mesh (strengthening substance) is immersed in concrete (matrix substance).
steel bars or wire mesh (matrix substance) is immersed in concrete (strengthening substance).
Reinforced concrete is widely used in the
construction of
bridges
dams
phone
buildings
Fibre Glass is used to make
helmet
laptop
car bumpers
Optical fibre consists of
3 layers
2 layers
1 layers
Photochromic glass protects the user from
UV rays
gamma rays
Infrared
Concrete can withstand_________ forces but will break if subjected to _________ forces.
high compression , high stretching
high compression , low stretching
low compression , high stretching
Glass is ________ and does not absorb _______
transparent , UV rays.
transparent , gamma rays
opaque , UV rays
opaque , gamma rays
