Exploring Materials Engineering Concepts

Which of the following is a physical property of a material?

• Electrical conductivity

• Tensile strength

• Melting point

• Cost

What is the main advantage of using composite materials in engineering?

• They are always cheaper than metals

• They combine the best properties of their constituent materials

• They are easier to recycle

• They are always lighter than plastics

Which of the following is considered a sustainable material?

• Single-use plastics

• Recycled aluminium

• Asbestos

• Lead

The ability of a material to return to its original shape after being stretched is called:

• Ductility

• Elasticity

• Malleability

• Brittleness

Which of the following is NOT a composite material?

• Concrete

• Carbon fibre reinforced polymer

• Stainless steel

• Plywood

What is the main environmental benefit of using sustainable materials?

• They are always stronger

• They reduce the depletion of natural resources

• They are more expensive

• They are heavier

Which property describes a material’s ability to withstand scratching or abrasion?

• Hardness

• Toughness

• Flexibility

• Conductivity

Fibreglass is a composite made from:

• Glass fibres and plastic resin

• Carbon and steel

• Wood and glue

• Aluminium and copper

Which of the following is a renewable resource used in sustainable materials engineering?

• Crude oil

• Bamboo

• Lead

• Coal

The formula for density is: