Fill in the Blanks 1SBO/1SRO Composite materials unit 3Online version Complete the text with the vocabulary about composite materials in unit 3 by Cristina Hernández Alcaine 1 When you think of examples of hi - tech materials , composite materials come to mind , such as carbon fibre , used in aerospace and Formula 1 cars . But although we think of as hi - tech and highly expensive , that's not always true . The earliest examples of composite materials were bricks made from and . Or , to use the correct composite terms , from straw - the structural network that reinforces the material inside , and a mud matrix ) , the material surrounding the reinforcement . These terms explain what a composite material is : a matrix with a material inside it . A modern , everyday example is which has a plastic matrix reinforced with glass fibres .
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