Properties of materials 2

What is surface hardness a measure of?

• A material's ability to conduct electricity

• A material's ability to resist permanent plastic deformation

• A material's ability to absorb water

• A material's ability to reflect light

What does high hardness provide?

• Good electrical conductivity

• Good thermal insulation

• Good wear resistance

• Good flexibility

What is one property that high hardness does not provide?

• Wear resistance

• Impact resistance

• Scratch resistance

• Indentation resistance

What is the effect of high hardness on wear?

• Increases wear

• Reduces wear

• Has no effect on wear

• Makes wear unpredictable

What does embedded energy allow when selecting materials?

• Faster construction times

• Cheaper material costs

• Informed choices for sustainable materials

• More colorful buildings

Why is it important to specify recyclable materials in construction?

• To make buildings heavier

• To increase the recycling potential and sustainability

• To make construction more expensive

• To reduce the lifespan of buildings

What is the benefit of using construction techniques that allow easy separation of materials?

• It makes the building taller

• It increases the recycling potential

• It makes the building more colorful

• It reduces the number of workers needed

Reorder from materials with the highest embedded energy to the lowest

• concrete

• Glass

• Aluminium

• Sand

• bricks