Materials with Missions

Question 1 · multiple choice

A raincoat needs a fabric that chiefly…

Cracks when folded Resists liquid water passing through Absorbs every raindrop quickly Dissolves easily in rain

Question 2 · multiple choice

Which material property lets a rubber band return after stretching?

Transparency Solubility Elasticity Magnetism

Question 3 · multiple choice

A window must admit light while keeping wind out. Choose…

Open wire mesh Loose cotton wool Transparent glass Opaque cork

Question 4 · multiple choice

Why can copper be drawn into thin electrical wires?

It is ductile It is brittle It is porous It is soluble

Question 5 · true false

True or false: A harder material is always tougher against impact.

True False

Question 6 · multiple choice

A ceramic cup may crack when dropped because ceramics are generally…

Liquid at room temperature Highly stretchy Magnetically soft Brittle

Question 7 · multiple choice

Which connects a sponge and a pumice stone structurally?

Many small spaces inside A single solid crystal always Perfectly sealed surfaces A liquid metal centre

Question 8 · multiple choice

Plywood has layers with grain directions alternating. This helps…

Make every layer transparent Turn wood into plastic Remove all water absorption Resist splitting in one direction

Question 9 · multiple choice

A composite combines fibres with a surrounding material mainly to…

Make every component identical Combine useful properties Guarantee it can never break Remove all manufacturing steps

Question 10 · multiple choice

Why are many saucepan bases metal but their handles heat-resistant plastic?

Different parts need different thermal properties Both must transfer heat equally Plastic always weighs more Metal cannot be shaped into handles