# What Does It Mean When Contour Lines Are Close Together?

Contour lines that are relatively close together indicate a slope that is fairly steep. Contour lines that are further apart indicates a slope that is relatively flat.

## What Does It Mean When Contour Lines Are Close Together?

Contour lines are used on maps to show the shape of the land. They are lines that join points of equal height above sea level. When contour lines are close together, it means that the land is steep.

The closer the contour lines are, the steeper the land is. You can use contour lines to work out the gradient of a hill. The gradient is the steepness of the hill.

It is the number of contour lines that you cross in a given distance. For example, if you cross 5 contour lines in 100 metres, the gradient is 1 in 20.

This means that for every 20 metres you travel horizontally, you will go up (or down) 1 metre. You can also use contour lines to find out the height of a hill.

If you know the distance between two contour lines, you can work out the height of the land between them. Contour lines are a very useful tool for walkers, climbers and mountaineers.