composite materials

A composite material is made of 

• A single material
• Two or more separate materials
• Two or more chemically combined materials
• None of these

Which of the following is not a composite material?

• tooth fillings

• cotton

• plywood

• a mackintosh

Which one of the following is a composite material?

• cotton

• rubber

• neoprene (wetsuit material)

• plywood

Why are composite materials so widely used?

• They combine the properties of all the materials they are made from.

• They are all waterproof

• They all wash better than non-composite materials.

• They are all much stronger than non-composite materials

Flexible means...

• bends easily 
• breaks if you bend it 
• scratches easily

Which statement about a composite material is true?

• it contains only one chemical element
• it does not contain any binder
• it is better than the materials that make it up
• it consists of two and only two materials

Brittle means...

• bends easily 
• breaks if you bend it 
• scratches easily

______________________ is the material’s ability to return to its near original shape after a stress has been applied and removed.

• Ductility
• Brittleness
• Elasticity
• Hardness

Composite materials are easy to recycle?

• True

• False

Which one of these is NOT a composite?

• Kevlar

• laminate wood flooring

• neoprene

• Concrete