Hachure lines, or lines with teeth, describe
I don't know what "caprock" is, but your school subject may be geography.
http://crosswords911.com/hachured.html
Hachure lines, also known as lines with teeth, are a type of contour line used in cartography and topographic maps to represent slope or relief. They depict areas of elevation or depression on the map surface and help to visually convey the shape and form of the terrain.
To understand and interpret hachure lines, it's important to know that they typically point downhill or towards lower elevations. The spacing, length, thickness, and angle of the hachure lines can indicate the steepness of the slope and the intensity of the relief.
Here's how you can interpret hachure lines on a map:
1. Look at the orientation: Hachure lines will generally point in the direction of decreasing elevation or downhill. This means they will be perpendicular to contour lines (lines connecting points of equal elevation).
2. Observe the spacing: Closer spacing between hachure lines indicates a steeper slope or a more rapid change in elevation. Conversely, greater spacing suggests a gentler slope or a gradual change in elevation.
3. Consider the length and thickness: Longer and thicker hachure lines are often used to represent larger mountains or higher relief features, while shorter and thinner lines depict smaller hills or lower relief areas.
4. Analyze the pattern: By examining the overall pattern of hachure lines, you can get a sense of the shape and topography of the land. Clusters of closely spaced lines may indicate a ridge or a valley, while concentric circles of hachure lines might suggest a hill or a peak.
By analyzing these characteristics of hachure lines, you can gain valuable insights into the terrain features represented on a topographic map.