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properties of materials - Coggle Diagram
properties of materials
hardness
how difficult something is to cut into
diamonds
stiffness
how much a material bends when force is applied
not the same as strength
examples
steel is stiff and strong
a rubber band is strong but not stiff
a bendy material can be strong if it goes back into shape after force is removed
strength
how good a material is at withstanding force
testing strength
see how much force is needed to break or perminentley change its shape
two types of strength
compressive strength
how much a material can resist a pushing force
e.g. bricks need to be strong when compressed
tension/tensile strength
how much a material can resist a pulling force
e.g. rope needs good tensile strength
