What material is flexible enough to make a diving board?

What material should be used to build a waterproof roof?

What material is suitable for making durable doors?

What material allows the most light to pass through?

What material is suitable for building a buoyant boat?

What material is a good conductor of heat for a barbecue grill?

What material is a poor conductor of heat for tongs?

What material can be used to coat copper wires for electrical safety?

What material is an electrical conductor for copper wires?