OS Contours

What do contour lines on an OS map indicate?

• The boundaries of different land ownership.

• The paths of rivers and streams.

• Points of the same height above sea level.

• The location of man-made structures.

How can you determine the vertical interval between contour lines on a map?

• By measuring the distance between them with a ruler.

• By checking the map's legend.

• By counting the number of lines between two points.

• By estimating based on the terrain's appearance.

What does it mean when contour lines on a map are drawn far apart?

• The area has a steep slope.

• The area is a mountain peak.

• The area has a shallow or gentle slope.

• The area is heavily forested.

What does it mean when contour lines on a map are drawn very close together?

• The area is flat.

• The area has a steep slope.

• The area is a valley.

• The area is a water body.