contour line

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contour line

A contour line connects the mountain peak to the valley on the topographic map.

Definition

Noun A line on a map or chart that connects points of equal elevation (height) above a specified reference level, such as sea level. Contour lines are used to represent the three-dimensional shape of the land surface on a two-dimensional map.

Usage

Contour lines are a fundamental tool in cartography (map-making) and geography. They visually depict the slope, steepness, and form of terrain. The pattern and spacing of the lines indicate the landscape's features: * Closely spaced lines indicate a steep slope or cliff. * Widely spaced lines indicate a gentle slope. * A series of closed loops typically indicates a hill or a depression.

Examples
  • Noun:
    • The contour line for 1000 meters runs along the ridge of the mountain.
    • By following the contour lines, hikers can avoid climbing steep hills unnecessarily.
    • The map uses brown contour lines to show the shape of the valley.
Advanced Usage
  • Contour interval: The constant difference in elevation between two successive contour lines. For example, if the contour interval is 10 meters, one line represents 100m, the next 110m, and so on.
    • Before reading the map, check the legend to find the contour interval.
Variants and Related Words
  • Contour (noun): Often used synonymously with "contour line." It can also refer more generally to the outline or shape of something.
    • The contour of the coastline is very irregular.
  • Contour map (noun): A map that uses contour lines to show relief and topography.
    • A contour map is essential for planning this hiking trip.
  • Isobar: A line on a map connecting points of equal atmospheric pressure (a related concept in meteorology).
  • Isotherm: A line on a map connecting points of equal temperature.
Synonyms
  • Isohypse (a technical term used in surveying and meteorology)
  • Level curve
  • Elevation line
Related Phrases/Concepts
  • Topographic map: A detailed, large-scale map that uses contour lines to represent the shape and elevation of the terrain.
    • Geologists often work with topographic maps.
  • To follow a contour: To travel along a path that maintains a constant elevation, often by following a contour line on a map.
    • The trail follows the 200-meter contour around the lake.
contour line

A contour line connects the mountain peak to the valley on the topographic map.

Noun
  1. a line drawn on a map connecting points of equal height

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