Everyday Materials Quiz

Explanation
Metals can be described as rigid because they have a high level of strength and stiffness. They do not easily deform or bend under pressure, making them suitable for structural applications. Metals have strong metallic bonds between their atoms, which contribute to their rigidity. This characteristic allows metals to maintain their shape and resist deformation, making them ideal for constructing buildings, bridges, and other load-bearing structures.

Explanation
Glass is a hard material, but it can break easily. Glass is brittle and lacks flexibility, making it prone to shattering when subjected to force or pressure. Unlike materials like metal or plastic, which can bend or stretch without breaking, glass is more fragile and has a tendency to fracture when stressed beyond its limits. Therefore, the correct answer is "break."

Explanation
Clothes are made from fabric because fabric is a flexible material that is commonly used to make clothing. It can be woven or knitted into various types of textiles, such as cotton, silk, wool, or synthetic fibers. Fabric is chosen for its comfort, durability, and ability to be tailored into different styles and shapes. It is also breathable and allows air circulation, making it suitable for everyday wear. Glass and clay are not commonly used materials for making clothes, as they are rigid and not suitable for clothing purposes.

Explanation
Wool is suitable for making gloves because it is a natural material that provides warmth and insulation. It is soft, comfortable, and can retain heat even when wet. Wool also has moisture-wicking properties, which helps to keep the hands dry. Additionally, wool is durable and resistant to wear and tear, making it ideal for gloves that need to withstand daily use and friction.

Explanation
We wear waterproof coats to protect us from rain.

Explanation
Leather is known for its natural water resistance due to its dense and tightly woven fibers. The process of tanning leather involves treating it with chemicals that make it even more resistant to water. This treatment creates a barrier that prevents water from easily penetrating the leather. However, it is important to note that while leather is waterproof to some extent, it is not completely impervious to water and can still be damaged if exposed to excessive moisture for extended periods.

Explanation
Metals are known for their ability to conduct heat and electricity, as well as their malleability. They can be hammered into various shapes and drawn into thin wires. Plastic, fabric, and glass do not possess these characteristics, making them incorrect options. Therefore, the correct answer is metal.

Explanation
Plastic is not absorbent because it is a non-porous material, meaning it does not allow liquids or gases to pass through its surface. Unlike materials such as paper or cloth, plastic does not have tiny spaces or pores that can absorb or soak up liquids. Therefore, the correct answer is false.

Explanation
The statement "Hessian is soft and fluffy" is false. Hessian is a type of fabric made from jute or hemp fibers, which gives it a rough and coarse texture. It is commonly used for making sacks, bags, and upholstery. Therefore, it is not soft and fluffy.

Explanation
The property that means to protect from water is waterproof. This term refers to a material or object that is designed to prevent water from passing through it or to resist the penetration of water. It implies that the item is impermeable to water and can keep it out, ensuring that it remains dry and unaffected by moisture.

Explanation
Aluminium is considered a light material because it has a low density compared to many other metals. It has a density of about one-third that of steel, making it lightweight and easy to handle. Additionally, aluminium has a high strength-to-weight ratio, meaning it can be strong and durable while still being lightweight. These properties make aluminium a popular choice in various industries, including aerospace, automotive, and construction, where weight reduction is often desired.

Explanation
Metal is used to make a key because it is a strong and durable material that can withstand the repeated use and pressure applied while unlocking and locking doors or other objects. Metal keys are also less likely to break or wear out compared to keys made from other materials such as wood, plastic, or cloth. Additionally, metal keys can be easily shaped and cut to fit specific locks, making them a practical choice for key manufacturing.