Mapping

Question 1

What is the difference between 6 figure and 4 figure grid reference?

Answer 1

Four figure grid references use only 2 coordinates and 4 numbers. 2 for eastings and 2 for northings (e.g. the hospital is located 67 23). Meanwhile 6 figure grid references have numbers in between the major grid. Split each grid into tenths. 3 for easting and 3 for northings.
(e.g. the hospital is located 673 239)

Question 2

What is area reference?

Answer 2

Is used to reference a particular box. 2 numbers for Eastings and 2 numbers for Northings. e.g. 1234 (12 are Eastings and 34 are Northings)

Question 3

What are contour lines?

Answer 3

Contour lines are used to represent elevation at certain heights on a map. The closer the lines the steeper the slope.