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# What is the difference between a contour interval and an index contour?

Updated: 9/16/2023

Wiki User

14y ago

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the contour interval is the difference in elevation between contour lines that are next to each other

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14y ago
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Q: What is the difference between a contour interval and an index contour?
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### What are the difference's between contour interval and index contour?

What are the difference's between contour interval and index contour?

### On a topographic map where would you locate the contour interval in the margin?

It would be the difference between the two darker lines, or index lines, and then divide the space in between with your difference.

### What is the elevation change between two adjacent lines on the map?

Those lines representing elevation on a map are called contour lines. The difference in elevation between two of these lines is called the contour interval. Different maps use different contour intervals based on the scale of the map, or in other words, the size of the contour interval is based on how zoomed in and detailed the map is. Sometimes a map will have darker and thicker contour intervals. This is called the Index Contour Interval. Index contour intervals appear less frequently and represent a larger elevation change. It helps you figure out the amount of a large elevation difference faster because usually they are multiples of 100 or 1000, making them easier to add up.

### What is the elevation change between two adjacent lines on a map?

Those lines representing elevation on a map are called contour lines. The difference in elevation between two of these lines is called the contour interval. Different maps use different contour intervals based on the scale of the map, or in other words, the size of the contour interval is based on how zoomed in and detailed the map is. Sometimes a map will have darker and thicker contour intervals. This is called the Index Contour Interval. Index contour intervals appear less frequently and represent a larger elevation change. It helps you figure out the amount of a large elevation difference faster because usually they are multiples of 100 or 1000, making them easier to add up.

### How far apart would two successive index contours be on a map with a contour interval of 5 meters?

Two successive index contours on a map would be 5 meters apart. The interval is how far apart two contour lines are, so since the contour interval is 5 meters the answer is 5 meters.

### What is every fifth contour line?

it is a contour line of elevation Control index contour, or just index contour

### How does index contour lines differ from other contour lines?

index contour lines have numbers contour lines dont

An Index Contour

### The heaviest contour lines on a topographic map are?

an index contour.

index contour

### What is a index contour?

A thicker line that has numbers written on it showing the rising or decreasing elevation on a topographic map By Ash Every fifth contour line on a topographic map, usually thicker, used to label elevation.

### What is a darker contour line usually every fifth line?

It makes it easier to count the number of contour lines.