Mapwork

Question 1

Gradient

Answer 1

__VI__

HE

Question 2

Area

Answer 2

(measured length x scale)(measured breadth x scale)

Question 3

Magnetic declination

Answer 3

seconds change per year x number of years

Subtract from true north

Question 4

Which map has a larger scale

Answer 4

Orthophoto (large scale = large amount of detail)

Question 5

Drawing a cross-section

Answer 5

1. Label the contour lines on scrap paper
2. Transfer the info to your axes
   Join the dots by hand, label important features (i.e. start point, end point, rivers)

Question 6

GIS

Answer 6

Geographical information systems

Question 7

What is GIS

Answer 7

A computer system that maps and analyses layers of spatial data

Question 8

Components of GIS

Answer 8

Hardware, software, data, people, procedures

Question 9

Spatial data

Answer 9

The position of data (Coordinates)

Question 10

Vector Data

Answer 10

Spatial data Stored in point form of coordinates. Line, point or polygon figures

Question 11

Raster data

Answer 11

Spatial data in the form of pixels

Question 12

Data/ thematic layering

Answer 12

Layers of information including:
Vegetation
Contour lines
Roads
power lines
Water bodies

Question 13

Buffering

Answer 13

To demarcate an area or object