Materiales naturales y sintéticos – ¿Sabías que?

Silk is a natural material produced by the caterpillar of the Silk butterfly. During its transformation, the caterpillar forms a cocoon made of silk threads. These threads are created from a liquid that solidifies upon contact with air, with each silkworm producing over 1 km of silk thread.

What is the origin of silk as a material?

• It is made from plant fibers.

• It is produced by the caterpillar of the Silk butterfly.

• It is a synthetic material.

• It is a mineral-based material.

What significant change does the caterpillar undergo?

• It starts to fly.

• It grows wings immediately.

• It forms a cocoon around itself.

• It changes color.

What happens to the silk liquid when it comes into contact with air?

• It evaporates.

• It solidifies.

• It changes color.

• It becomes sticky.

How long is the silk thread that each silkworm weaves?

• More than 1 km

• Less than 100 meters

• About 2 km

• Exactly 500 meters

What is the primary component of the cocoon threads?

• A thick silk liquid

• A wool-like fiber

• A cotton-like substance

• A thin silk liquid