Mapwork Theory (not GIS) Flashcards
What is the opposite of a steep slope?
A gentle slope
What is the formula for vertical exaggeration?
Horizontal scale
What is the formula for magnetic bearing?
Magnetic declination + True bearing
To calculate magnetic declination, what must the difference in years be multiplied with?
Mean annual change
Write out fully
What is the formula for gradient?
Horizontal distance/equivalent
What is the unit of vertical exaggeration?
Times
Exaggerated x times
What is a choropleth map?
A map that shows information through shading.
A large-scale map shows:
a) a large area in little detail 🌍
b) a small area in a lot of detail 🏘
b) a small area in a lot of detail
What is the formula for distance?
100 000
Name the 4 settlement patterns
Nucleated/ random nucleated
Dispersed
Linear
Cross roads
What is the difference between a gorge and a valley?
The sides of a gorge are much steeper.
What is the name of the boundary zone outside the urban area where rural and urban land uses intermix?
🌳🌾🌾🏠🌾🌳🌳🌳
Rural-urban fringe
What is the name of the dilapidated area with high land value outside the CBD?
🏢🏥🏦🏬 🏚🏚
The transition zone / zone of decay
What is an index line?
The thicker contour line
Where on a trig beacon do you measure from?
The top point
What are the dominant crops grown in the Cape, KZN and central South Africa?
Cape: citrus and grapes
KZN: sugarcane
Central SA: maize/ wheat
What is the name for:
~ a bend in a river
~ an isolated bend (no longer part of the river)
~ a rapid/ waterfall
Meander
Ox-bow lake
Knickpoint
Know how to draw a cross-section that isn’t free-hand
X-AXIS: horizontal distance
Y-AXIS: height above sea level (m)
🌺
What are the 4 types of street patterns?
Grid/ gridiron
Linear
Radial
Planned/ unplanned irregular
Name the 3 settlement shapes
Star/ crossroads
Circular
Linear
Name 2 settlement patterns
Nucleated
Dispersed
How do you calculate the seconds for the coordinates of a point
Total distance between 2 minutes (mm)
