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wool

Primary Information
Secondary Information

Definition

Wool is a natural fibre that is obtained from the fleece of sheep, goats, llamas, and other animals. It is made up of protein fibres called keratin. Wool fibres are crimped, which gives them their warmth and water-resistant properties.

Wool is a renewable resource that can be sheared from sheep without harming them. It is also a biodegradable material, which means that it can be broken down by bacteria and other organisms.

Wool is a versatile material that has been used by humans for centuries. It is used to make many different things, such as sweaters, coats, hats, carpets, and rugs. Wool is also used in insulation and padding.

The properties of wool vary depending on the type of animal it comes from and the way it is processed. For example, merino wool is a soft and fine wool that comes from merino sheep. It is often used to make sweaters and other delicate clothing. Cashmere wool is a soft and luxurious wool that comes from cashmere goats. It is often used to make scarves and other accessories.

Wool is a sustainable and environmentally friendly material. It is a good choice for people who are looking for a natural and comfortable material to wear.

How can the word be used?

The sweater was made of wool.

wool

Different forms of the word

Noun:

  • the fine, soft hair that grows on sheep and other animals.
  • a fabric made from wool.

Verb:

  • to shear sheep or other animals to obtain wool.

Etymology

The word "wool" comes from the Old English word "wōl", which also means "the fine, soft hair that grows on sheep and other animals".

The first recorded use of the word "wool" in English was in the 7th century.

Question

What can wool be used for?

AQA Science Exam Question and Answer

Question:

Explain the properties and benefits of wool as a natural fibre. Discuss how the unique structure of wool fibres contributes to its thermal regulation and moisture-wicking properties, making it suitable for various applications.

Answer:

Wool is a remarkable natural fibre with several unique properties that make it highly desirable for various applications. Its structure and composition contribute to its exceptional thermal regulation and moisture-wicking abilities.

Wool fibres have a distinctive outer layer known as the cuticle, composed of overlapping scales. These scales create tiny pockets of air within the fibre, providing effective insulation. This natural insulation helps regulate body temperature by trapping warm air close to the skin during colder conditions while allowing excess heat to escape when it's warmer.

Furthermore, the unique structure of wool fibres enables them to absorb and release moisture without feeling wet. Wool can absorb up to 30% of its weight in water vapour, making it effective at wicking away perspiration and maintaining a dry and comfortable environment. This moisture management property is particularly advantageous in both warm and cold climates, as it helps prevent overheating and chilling.

Due to its exceptional qualities, wool is used in a wide range of products, including clothing, blankets, and upholstery. Its insulating properties make it suitable for cold-weather garments, while its moisture-wicking abilities enhance comfort during physical activities.