Composites Lesson Questions

What was added to clay to create a stronger brick?

• Straw

• Sand

• Water

• Gravel

What is a composite material?

• A single uniform substance

• Two different materials combined

• A mixture of gases

• A type of metal

What is the role of Portland cement in concrete?

• Filler

• Adhesive

• Matrix

• Reinforcement

Why is gravel added to Portland cement?

• To decrease weight

• To increase flexibility

• To enhance durability

• To improve color

What additional component makes concrete suitable for bridge decking?

• Steel rebar

• Plastic

• Wood

• Rubber

What are the common components of a composite?

• Matrix and reinforcement

• Cement and wood

• Binder and plastic

• Matrix and adhesive

Which material is used as a matrix in many modern composites?

• Steel

• Glass

• Clay

• Resins

What does adding glass fiber to resin create?

• Fiberglass

• Concrete

• Particle board

• High density fiberboard

Which industry has seen recent advances in composites?

• Construction

• Electronics

• Aerospace

• Automotive

What are the characteristics of materials created using composites?

• Soft and malleable

• Brittle and opaque

• Strong and lightweight

• Weak and heavy