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GCSE Tech > Hour long revision recap > Flashcards

Hour long revision recap Flashcards

1
Q

What plastic is used in 3d printing

A

PLA

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2
Q

What makes PLA plastic different from normal plastics

A

Its a biopolymer, and is biodegradable

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3
Q

What does plasticity mean

A

How easily a plastic can be bent, or changed shape, without cracking or breaking

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4
Q

What is a digital vernier calliper

A

The very accurate measuring thing

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5
Q

What is the very accurate measuring thing

A

A digital vernier calliper

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6
Q

What is a coping saw used to cut

A

woods or plastics, especially to cut bends

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7
Q

What is a tenon saw used for

A

Cutting straight cuts in wood

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8
Q

What is a tri-square

A

Used to draw 90 degree angle

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9
Q

What is used to draw a 90 degree angle

A

Tri-square

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10
Q

What is the saw to cut straight cuts in wood

A

Tenon saw

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11
Q

What is the saw to cut curved cuts in wood or plastic

A

coping saw

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12
Q

What is a plain head or slotted scredriver

A

Flat, one line screwdriver

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13
Q

What is a flat, single line screwdriver

A

Plain head screwdriver. Or slotted scredriver

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14
Q

What is a pozidriv head screwdriver

A

Cross roads

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15
Q

What is a mallet

A

Used to hit chisels

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16
Q

What is a marking gauge

A

Used to score parallel lines

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17
Q

What is used to score parallel lines

A

A marking gauge

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18
Q

What is a rasp

A

A very course file

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19
Q

What is the name of a very course file

A

A rasp

20
Q

What is a hacksaw used for

A

To cut through metals

21
Q

What is the real name for sandpaper

A

Abrasive paper

22
Q

What is used to mark metal

A

Scriber

23
Q

what is a ball pein hammer

A

Hammer used to hammer metals, e.g to change its shape

24
Q

What are the three types of file

A

Flat file
Round file
Three square file

25
Q

Which file has a triangular cross section

A

Three square file

26
Q

What is a centre punch

A

Used to leave an indentation on metal, so a drill will not slip

27
Q

What is used to hit a centre punch

A

A ball pein hammer

28
Q

What is used to leave an indentation on metal so drills wont slip

A

A centre punch

29
Q

What are tin snips

A

They are “pliers” used to cut thin sheet metal

30
Q

Why are tin snips better than a hacksaw

A

They leave a cleaner finish

31
Q

What is used to cut thin sheet metal

A

Tin snips

32
Q

What are the 3 types of permanent joins in metal

A

Soldering
Brazing
Welding

33
Q

What is soldering

A

Melting a low melting point metal (solder), around a joint

34
Q

What is brazing

A

Similar to soldering, but using brazing rods, which melt at 800 degrees C

35
Q

What metal is used in brazing, and what is the melting point

A

Brazing rods, melts at 800 degrees C

36
Q

What is welding

A

Melting a strong filler metal, to join two pieces of metal

37
Q

What are nuts

A

The thing that screws on to bolt (smaller)

38
Q

What are bolts

A

The rod with a thread

39
Q

What is used to stop nuts shaking loose

A

Spring washers, keeps tension on the nut

40
Q

What are nylock nuts

A

Have a blue nylon insert, which the bolt cuts a thread into, stoping shaking loose

41
Q

What are the nuts used on aeroplanes

A

nylock nuts

42
Q

What is managed forestry

A

Planting trees as you cut them down

43
Q

What does FSC stand for

A

forestry stewardship council

44
Q

Why be sustainable?

A

People are more inclined to purchase sustainable products
Governments can pass laws, giving an environmental standard for products

45
Q

What are plastics made from

A

Oil

46
Q

What are the 6 rs

A

reduce
reuse
recycle
rethink
repair
refuse

GCSE Tech (8 decks)

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