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25
×
Name 3 applications of copper.
Wires, motors, plumbing - good conductor and durable.
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20
×
What does forging do to metal?
Strengthens and refines its structure.
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20
×
Fill in: A ______ is used to pour molten metal into a shape.
Mould - used in casting.
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20
×
Which process strengthens metal by hammering?
Forging - improves toughness.
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baam
Lose 25 points!
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magnet
Take 20 points!
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rocket
Go to first place!
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thief
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25
15
×
True or False: Copper is a poor conductor.
False - it's one of the best conductors of electricity.
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seesaw
Swap points!
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star
Double points!
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rocket
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thief
Give points!
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25
15
×
Which process involves molten metal?
Casting - pouring liquid metal into moulds.
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15
×
True or False: Extrusion involves melting and forcing through a die.
True - it produces rods, pipes, and cables.
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20
×
Name 3 materials that are flexible.
Rubber, nylon, plastic
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baam
Lose 25 points!
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seesaw
Swap points!
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rocket
Go to first place!
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baam
Lose 15 points!
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15
×
Name 3 uses of aluminium.
Cans, cables, planes.
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15
×
Why are metals shiny?
They reflect light well due to free electrons.
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10
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Which material is more brittle: glass or steel?
Glass.
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25
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Name 3 metals that don't rust easily.
Aluminium, copper, stainless steel.
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25
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Name 3 metals that are magnetic.
Iron, cobalt, nickel
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