Scale (Grade 12 NSC Matric Mathematical Literacy): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Definition of scale in maps/plans
Definition of scale in maps/plans
Relationship between map distances and real-life distances
Meaning of number scale 1:50
Meaning of number scale 1:50
1 unit on map = 50 units in real life
Two main types of scales
Two main types of scales
Number scale and bar scale
Critical rule for scale calculations
Critical rule for scale calculations
Both values must be in the same units
To find real distance from map distance
To find real distance from map distance
Multiply by the scale factor
To draw scaled plan from real measurements
To draw scaled plan from real measurements
Divide by the scale factor
Description of a bar scale
Description of a bar scale
Visual ruler/bar with marked segments showing real distances
Advantage of bar scale when map is resized
Advantage of bar scale when map is resized
Remains accurate; resizes with the map
Disadvantage of number scale when resized
Disadvantage of number scale when resized
Becomes incorrect/unreliable
Best scale type for photocopied maps
Best scale type for photocopied maps
Bar scale