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GCSE DT > Materials > Flashcards

Materials Flashcards

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1
Q

Density is

A

Mass per unit volume

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2
Q

Melting point

A

Temp at which a material turns solid to liquid

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3
Q

Thermal conductivity

A

Ability to conduct heat

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4
Q

Electrical conductivity

A

Ability to conduct electricity

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5
Q

Strength is

A

Ability to withstand stress without breaking

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6
Q

Plasticity

A

Ability to deform when loaded

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7
Q

Malleability

A

Ability to be shaped under compressive stress (hammering or rolling)

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8
Q

Ductility

A

Ability to deform under tensile stress (stretched)

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9
Q

Hardness

A

High resistance to shape change , scratching or cutting

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10
Q

Durability

A

Ability to withstand demanding applications (eg outside in extreme environments)

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11
Q

Test for Tensile strength

A

Stretch a material to see how it extends (steel cables in bridge building need high tensile strength)

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12
Q

Testing for hardness

A

Measure the depth of an indentation left by an indented applied with a specific force

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13
Q

Test for toughness

A

Measured resistance of materials to break or fracture

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14
Q

Test for ductility

A

How much a material will deform before breaking (eg a copper wire can be drawn, pulled thinner, before it breaks)

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15
Q

Opaque

A

Cannot see through it

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16
Q

Translucent or transparent

A

Can see through it

17
Q

Aluminium is

A

A metal
Lightweight
Resistant to corrosion

18
Q

Plywood is

A

Strong
Hard wearing flexible
Durable
Shaped using laminating

19
Q

Polypropolyne is

A

Available in range of colours

Can form complex shapes

20
Q

Definition of a Natural material

A

one derived from plants, animals or ores from the ground

21
Q

Definition of a Composite material

A

two or more materials are bonded together with improved properties

22
Q

Definition of a Synthetic material

A

created by man via a scientific process

23
Q

Definition of a Smart material

A

reacts to its environment

24
Q

Definition of a Regenerated material

A

ones that have been reused of processes into a different type of product (eg wood waste into chipboard)

GCSE DT (12 decks)

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