Mapwork (Paper 2) Flashcards
What is the word for a map-maker?
Cartographer
How much does latitude and longitude does one topographical map cover?
15 minutes by 15 minutes (640km^2)
How big are the blocks that SA is divided into?
1 degree by 1 degree (with 16 maps in each)
How do you convert DMS to Decimal Degrees?
Leave degrees Add to Minutes divided by 60 Add to Seconds divided by 3600
Definition of magnetic bearing
The angle between magnetic north and a given point
Definition of magnetic declination
The angle of difference between the direction of True North and Magnetic North
What is MD equal to
(annual change x year difference) + total change
What is MB equal to
TB + MD
Where do shadows fall in the morning?
To the SW
Where do shadows fall in the afternoon?
To the SE
Definition of relief
Shape (in terms of height) of the Earth’s surface
Give TWO examples of things which show relief
Spot Heights
Trig Beacons
Definition of Vertical Exaggeration
Amount by which the vertical scale of a cross section is bigger than the horizontal scale
Formula for Vertical Exaggeration
VS/HS
vertical scale over horizontal scale
How is gradient shown?
As a ratio of (Height:Distance)
What is the main geographical factor that will influence land use?
Relief
Where will settlements definitely NOT be found
On steep slopes
Far away from rivers
Definition of aspect
The compass direction that a slope faces
Will crops be grown on the S or N facing crops in the SH?
On the sunnier, north-facing slopes
Does forestry take place on steep slopes or gentle slopes?
Steep slopes
Does crop farming take place on steep slopes or gentle slopes?
Gentle slopes
Which kind of rivers indicate a good water source
Perennial rivers
Which TWO things indicate seasonal rainfall?
Non-perennial rivers
Storage dams