A cartographer creates a topographic map using contour lines every 10 meters. A hill rises from 120 meters to 680 meters above sea level. How many contour lines (including both elevations) appear on the map? - Deep Underground Poetry
Creating Accurate Topographic Maps: Understanding Contour Lines
Creating Accurate Topographic Maps: Understanding Contour Lines
A topographic map is an essential tool for cartographers, hikers, geologists, and urban planners. It visually represents elevation changes across a landscape using contour lines—imaginary lines connecting points of equal elevation above sea level. One common practice is defining contour intervals that simplify terrain interpretation while maintaining precision.
The hill in focus rises from 120 meters to 680 meters above sea level. With a standard contour interval of 10 meters, cartographers carefully determine how many contour lines appear on the map. But how is this calculated?
Understanding the Context
Understanding Contour Lines and Intervals
Contour lines mark specific elevation levels. For example, every 10 meters—120 m, 130 m, 140 m—up to 680 m—each represents a distinct elevation. Since the base elevation is 120 m and the peak reaches 680 m, the total vertical rise is:
680 m – 120 m = 560 meters
With a 10-meter contour interval, the number of elevation steps is:
Image Gallery
Key Insights
560 ÷ 10 = 56 intervals
However, contour lines are drawn at each elevation point, including both the starting and ending points. This means the first contour line appears at 120 m, and the last at 680 m, spanning exactly 56 intervals.
Total Number of Contour Lines
Because each elevation increment corresponds to a single contour line, and both endpoints are included, there are 57 contour lines on the map.
Visual and Practical Implications
🔗 Related Articles You Might Like:
📰 This Tamil Gun Could Bring Down Tanks Scientists Never Saw Coming 📰 NCIS Ghost Weapon Exposed: The Rumored Tamil Gun That Changed Everything 📰 Unlock the Secrets Hidden in Tarot Cards You Never Knew Existed! 📰 Deathstalker Movie 1319315 📰 Is This The Biggest Breakthrough In Fund Investing The Vanguard Star Fund Explained 620675 📰 You Wont Believe What Ali Abulaban Said During His Exclusive Interview 8934429 📰 The Ultimate Guide To Stunning Counter Height Kitchen Dining Sets You Wont Want To Miss 8859350 📰 Doodle Of God 1100490 📰 Fingering Her 8073302 📰 Ebay Seller Fees 2856811 📰 Amanda Balionis Rory Mcilroy 4113661 📰 Nitrate Water Filter 8681277 📰 Best Coffee Maker 2025 7763903 📰 Loren Ipsum 9078295 📰 Fishing Clip Art 6669554 📰 What Catastrophic Shift Could Explain International Papers Stock Surge Find Out 6526352 📰 Stop Surprised When You Lose A Toothdid You Know Humans Have A Secret Teeth Count No One Talks About 5687171 📰 How To Change The Dodos Speed In San Andreas 7174150Final Thoughts
This structured elevation representation helps hikers gauge steepness, engineers plan construction, and scientists model watersheds or land degradation. Precision in selecting interval size—like 10 meters—ensures clarity without cluttering the map.
In summary:
- Start: 120 m
- End: 680 m
- Elevation range: 560 m
- Contour interval: 10 m
- Contour lines drawn at: 120, 130, ..., 680 (inclusive)
- Total contours: 120 → 130 → ... → 680 = (680 – 120)/10 + 1 = 57 lines
This methodical approach underscores the cartographer’s role in transforming raw terrain into actionable geographic knowledge.
Key SEO Keywords:
topographic map, contour lines, elevation intervals, cartography, 10 meter contour interval, hill elevation 120m to 680m, cartographic accuracy, topographic mapping, contour line count, terrain representation
Use this detailed breakdown to enhance understanding of how contour lines symbolize elevation—and how cartographers determine how many to include on a topographic map.
