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cranium

Primary Information
Secondary Information

Definition

The cranium is the part of the skull that encloses the brain. It is made up of eight bones, which are fused together to form a solid structure. The bones of the cranium are:

  • Frontal bone
  • Parietal bones (2)
  • Temporal bones (2)
  • Occipital bone
  • Sphenoid bone
  • Ethmoid bone

The cranium is very important for protecting the brain. It is also important for the formation of the face. The bones of the cranium grow and change shape as we grow, and they help to determine the shape of our face.

The cranium is also important for speech. The bones of the cranium help to amplify sound, and they also help to shape the sound of our voices.

How can the word be used?

The skull is made up of the cranium and the facial bones.

cranium

Different forms of the word

Noun: cranium (plural: crania).

Adjective: cranial.

Etymology

The word "cranium" comes from the Latin word "cranium," which means "skull." The Latin word "cranium" is ultimately derived from a Proto-Indo-European word meaning "horn.".

Question

What does the cranium protect?

AQA Science Exam Question and Answer

Question:

Cotton is one of the most widely used natural fibres in the world. Explore its unique properties and explain why it is preferred for various applications in the textile industry.

Answer:

Cotton is a versatile natural fibre derived from the cotton plant's seedpods. It possesses several unique properties that make it highly preferred in the textile industry.

Firstly, cotton fibres have excellent breathability. They allow air to pass through, making cotton fabrics comfortable to wear, especially in warm climates.

Secondly, cotton is absorbent. It can hold a significant amount of moisture, making it an ideal choice for towels, bathrobes, and other absorbent products.

Thirdly, cotton fibres are soft and gentle on the skin. This quality makes cotton fabrics suitable for clothing, especially for people with sensitive skin.

Another advantage of cotton is its durability. Cotton fibres can withstand repeated washing and maintain their strength, which contributes to the longevity of cotton-based products.

Cotton is also biodegradable, meaning it can naturally decompose over time, reducing its impact on the environment compared to synthetic fibres.

The combination of breathability, absorbency, softness, durability, and biodegradability makes cotton an excellent choice for various applications in the textile industry, including clothing, home textiles, and medical products. Its natural properties have made it a staple material that continues to be in high demand worldwide.