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Technology grade 8 exams > TERM1 > Flashcards

TERM1 Flashcards

1
Q

What is componets

A

parts

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2
Q

What is vertical

A

at right angles to the ground,upright

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3
Q

What apex

A

top

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4
Q

What is a rafters

A

beams,forming part of internal framework of a roof

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5
Q

What is a tie beam

A

one horizontal beam which joins two rafters

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6
Q

What is compression forces

A

pushing forces

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7
Q

Tension forces

A

pulling forces

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8
Q

Span

A

cover,go over

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9
Q

What is triangulation

A

a method, which uses triangles to strengthen and reinforce structures

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10
Q

What is inflexible

A

rigid,stiff

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11
Q

check page 5

A

shear and torsion

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12
Q

What is elements

A

weather,includes rain,wind,heat and cold

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13
Q

what is durabillty

A

how long something lasts

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14
Q

Horizontally

A

parrallel to the ground

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15
Q

Decorative

A

added to improve what something looks like, not necessarily useful

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16
Q

What is the different types of bridges

A
  • suspension

- cable stayed

17
Q

check page 13

A

arch

18
Q

Overhang

A

a part which sticks out beyond support structures

19
Q

Facade

A

the face of a building

20
Q

What is a scale

A

relationship between measurements in a drawing and measurements on the real objects

21
Q

Dimension

A

Measurement

22
Q

Name 6 simple machines

A
  • lever
  • wheel and axle
  • pulley
  • inclined plane
  • wedge
  • screw
23
Q

what is a gear

A

wheels with teeth around their circumference that interlock with each other

24
Q

gear train

A

a system of two or more gears meshed together

25
Q

counter rotation

A

when two meshed gears rotate in opposite directions

26
Q

driver gear

A

the main gear in a gear train

27
Q

driven gear

A

the gear that is meshed with the driver gear and turns in opposite directions

28
Q

What is linear movement

A

movement along straight line

29
Q

Perpendicular

A

at a 90 degree angle

30
Q

check page 42 43

A

…….

31
Q

What type cams do you get

A
  • pear shaped
  • eccentric cams
  • the snail drop
32
Q

What type of followers do you get

A
  • knife
  • flat
  • roller
33
Q

Check page 48 49 for crank

A

………..

34
Q

check page 50 and 51 for bridges

A

…………………………………..

Technology grade 8 exams (4 decks)

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