Science Quiz / IB design technology Topic 4 part 2

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Can you name the IB design technology Topic 4 part 2?

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HintAnswer
Composite materials usually consist of synthetic fibres embedded within a matrix, a material that surrounds and is tightly bound to the fibres.
These include those produced by plants, animals, and geological processes. Vegetable fibres, Plant and dietary fibre are examples.
Whether a material is easily broken or snapped, e.g. Acrylic.
The tendency of a solid material to slowly move or deform permanently under the influence of stresses.
The ability to resist corrosion and decay.
The ability to resist electrical charge.
The ease at which electricity can pass through the material, e.g. Aluminium.
The ease at which heat can pass through the material, e.g. Aluminium.
The ability to return to the original shape, e.g. rubber and spring steel.
The ability to resist scratches and such material is usually difficult to cut, e.g. glass and high speed steel.
The ability to resist pulling forces, e.g. high tensile steel cables.
The ability to resist pushing forces, e.g. reinforced concrete.
The ability to resist twisting, e.g. carbon fibre.
HintAnswer
The ability to resist applied parallel or tangential to a face of a material, as opposed to a normal stress which is applied perpendicularly, e.g. scissors.
The ability to resist bending, e.g. cast iron.
The ability to resist impact and shock without fracture, e.g. mild steel.
The mechanical property used to describe the extent to which materials can be deformed plastically without fracture. E.g. Copper cables can be drawn to thin wire as it is very duct
The ability to be deformed moulded and bent without cracking, e.g. clay and lead.
Materials that have one or more properties that can be dramatically altered, for example, viscosity, volume, conductivity. The property that can be altered influences the applicati
A smart material which when deformed gives off a small electrical discharge. When an electric current is passed through it, it increases in size (up to a 4% change in volume).
A smart material as a fluid that can undergo dramatic changes in their viscosity. They can change from a thick fluid to a solid in a fraction of a second when exposed to an electri
A smart material as a fluid that can undergo dramatic changes in their viscosity. They can change from a thick fluid to a solid in a fraction of a second when exposed to a magnetic
A smart metal that exhibit changes in shape due to rearrangement of the molecules in the material. Pseudo-elasticity occurs without a change in temperature. It reverses when the lo
refers to the a structural order in a solid. In a crystal, the atoms or molecules are arranged in a regular, periodic manner.
lacks the long- range order charcterisitc of a crystal, without a clearly defined shape or form

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