The Secrets of Life’s Toughest Material

Nacre, also known as mother of pearl, is a naturally occurring material known for its toughness. Despite being easy to scratch, nacre is stiff, strong, and highly resistant to breaking. Its unique structure, composed of aragonite plates and organic material, provides strength and resilience. Scientists are inspired by nacre to create synthetic materials for medical applications, though more research is needed before public use.

What is one of the key properties of nacre that makes it stand out despite being easily scratched?

• It is highly flexible.

• It is very tough.

• It is extremely hard.

• It is lightweight.

How does the structure of nacre contribute to its toughness?

• It is a smooth, continuous surface.

• It is composed of spherical particles.

• It has a layered structure with organic material.

• It is made of a single solid sheet.

What role does the organic material play in the structure of nacre?

• It reduces the friction between layers.

• It makes nacre more brittle.

• It acts as a cushion to absorb stress.

• It increases the weight of nacre.

Why is synthetic nacre being researched for use in medical devices?

• It is biocompatible and durable.

• It is cheaper to produce than other materials.

• It is lighter than other materials.

• It is easier to manufacture.

What is a potential application of synthetic nacre mentioned in the video?

• Building construction

• Automobile parts

• Jewelry making

• Medical stents