GCSE Design Technology - chapter 2 Smart materials, composites and technical textiles | Attempts: 115

2.

________ pigments change colour in response to heat. Used as a temperatures indicator such as in fridges or the pigment is infused into the plastic of baby spoons.

Explanation
Thermochromatic pigments change color in response to heat. They are commonly used as temperature indicators, such as in fridges or in the pigment infused into the plastic of baby spoons.

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3.

Materials that get inspiration from the natural world are know as ________. Examples of these are 'Fastskin' swim suits that are inspired by the texture of shark skin to enable swimmers to swim faster, 'Velcro' which was invented in 1941 took inspiration from the burrs on seed pods and how they stuck to fur and clothing.

Explanation
The correct answer for this question is "biomimicry". Biomimicry refers to the practice of designing and creating materials, products, and systems that are inspired by and mimic natural biological processes and structures. It involves studying and learning from nature's designs and applying those principles to solve human problems and improve technology. Examples such as the Fastskin swim suits and Velcro demonstrate the application of biomimicry in creating innovative and efficient solutions by imitating nature's designs.

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1

4.

Composite materials are produced by combining two or materials together. The new material combines the characteristics of each material together often producing a stronger, lighter materials. Which of the following is not a composite material

Kevlar (trade name - it is lightweight, flexible and extremely durable)
Glass reinforced plastic (GRP) Often used to make boats, roofing or hockey sticks
Carbon fibre reinforced polymer (CFRP). lightweight, extremely strong and easily moulded. Application examples - bikes, sporting equipment, Formula 1 car components
Plywood

Correct Answer

A. Plywood

Explanation

Plywood is not a composite material because it is made by layering thin sheets of wood veneer together, without combining it with any other materials. It does not combine the characteristics of different materials like the other options mentioned, and it is not produced by combining two or more materials together.

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5.

'Micro-encapsulation' is a process where microscopic capsules are applied and built into fabrics or fibres. The capsules may contain vitamins, antiseptic, antibacterial chemicals which are released when they rub against skin. One area of use is medical bandages, The release of antiseptic chemicals will help the recovery of wounds and require bandages to be replaced less often.

True
False

Correct Answer

A. True

Explanation

Micro-encapsulation is a process that involves applying microscopic capsules to fabrics or fibers. These capsules can contain various substances such as vitamins, antiseptic, and antibacterial chemicals. When these fabrics or fibers rub against the skin, the capsules release their contents. One practical application of micro-encapsulation is in medical bandages. The release of antiseptic chemicals from the capsules can aid in wound recovery and reduce the frequency of bandage replacements. Therefore, the statement "Micro-encapsulation is a process where microscopic capsules are applied and built into fabrics or fibers" is true.

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6.

'Aramid Synthetic Fibre' (for example Nomex which is a trade name) is a material developed in the 1960s and is resistant to heat and flames. It can be up to 60x stronger than nylon fabric. It is used extensively in uniforms and clothing where fire and heat is a risk.

True
False

Correct Answer

A. True

Explanation

Aramid synthetic fiber, such as Nomex, was indeed developed in the 1960s and is known for its resistance to heat and flames. It is significantly stronger than nylon fabric, with a strength that can be up to 60 times greater. Due to its fire and heat resistance properties, aramid synthetic fiber is widely used in uniforms and clothing where there is a risk of fire or heat exposure. Therefore, the statement is true.

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7.

GRP is the acronym for

Glass Reinforced Plastic
Glass Resin & Polycarbonate
Galvinised Rexie Plated
The material GRP doesn't exist

Correct Answer

A. Glass Reinforced Plastic

Explanation

GRP stands for Glass Reinforced Plastic. Glass Reinforced Plastic is a composite material made up of a plastic matrix reinforced with glass fibers. This material is known for its high strength-to-weight ratio, corrosion resistance, and durability. It is commonly used in various industries, including automotive, construction, and marine, for applications such as body panels, pipes, tanks, and boat hulls.

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8.

Carbon fibre reinforced polymer (CFRP) is a composite material constructed of carbon fibre woven together with polymer resin

True
False

Correct Answer

A. True

Explanation

Carbon fibre reinforced polymer (CFRP) is indeed a composite material made by combining carbon fibre and polymer resin. The carbon fibre provides strength and stiffness, while the polymer resin acts as a binder, holding the fibres together and providing durability. This combination results in a lightweight yet strong material that is commonly used in various industries, including aerospace, automotive, and sports. Therefore, the given statement is true.

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GCSE Design Technology - Chapter 2 Smart Materials, Composites And Technical Textiles

Quiz Preview

________ pigments change colour in response to heat. Used as a temperatures indicator such as in fridges or the pigment is infused into the plastic of baby spoons.

Composite materials are produced by combining two or materials together. The new material combines the characteristics of each material together often producing a stronger, lighter materials. Which of the following is not a composite material

'Aramid Synthetic Fibre' (for example Nomex which is a trade name) is a material developed in the 1960s and is resistant to heat and flames. It can be up to 60x stronger than nylon fabric. It is used extensively in uniforms and clothing where fire and heat is a risk.

GRP is the acronym for

Carbon fibre reinforced polymer (CFRP) is a composite material constructed of carbon fibre woven together with polymer resin