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1-An aircraft wing is made of foam with fiberglass bonded to its exterior. This is which type of composite? a-Matrix b-Laminate c-Hybrid d-Sandwich 2- Which of the following is not a thermoplastic? a-Nylon b-Elastomer c-Acetal d-Polycarbonate 3- Crystallinity in plastics create a-higher transparency b-lower strength and lower density c-lower density and lower transparency d-higher strength and higher density 4-You want to test how a steel "ages". You would use a a-Hardness test b-Notched bar impact test c-Creep strength test d-Fatigue test