Reading Maps

Question 1

When examining any type of map, what does the ratio1:50 mean, for example?

Answer 1

Any one measurement taken on the map, should be multiplied by 50 to get the real-time, actual measurement of the distance.

Question 2

On a map, what does topography show?

Answer 2

The height of the land surface, and the shape of the land surface.

Question 3

What are Eastings and Northings?

Answer 3

Eastings and Northings are in reference to the National Grid. I.e, to find position on a map (co-ordinates) eastings and northings is required.On the bottom side of the grid, from 0 - 600km is EastingsOn the left side of the grid, from 0 - 1200km is Northings

Question 4

What are the steps to finding a bearing?

Answer 4

1. Put compass to zero
2. Line compass up with opposite Northings of original point.
3. Use compass like a protractor, and from your original point, maybe use a ruler and move round the compass until you line up with the next opposite point.
4. Thus, your bearing will be an angle.

Question 5

What is the purpose of contour lines?

Answer 5

They join up all the points which are the same height above sea level.

Question 6

Why are some contour lines, thicker than others?

Answer 6

The thicker contour lines indicate a 50m mark

Question 7

What do close contours indicate?

Answer 7

Steep ground.

Question 8

What is GIS? What does it stand for? And how can it be used in society?

Answer 8

GIS stands for: geographic information system.

GIS is self-explanatory, in that it basically a system that provides geographic information about an area. Beginning with the map of an area, multiple layers can be added to the map which give an insight into the pH of the soil, geology of the soil etc.

This can be used in less formal circumstances like planning walking routes, finding near by stores etc.
Or it can be used in the professional field. Creating proposal plans that include sewage systems, and the permeability of the soil.

Question 9

How can GIS be used in planning the positions of wind turbines?

Answer 9

Using GIS can provide insight into the landscape, so the turbine harvests optimal energy from its position on the land. Topography, the geology of the soil, rain fall etc. all are important.