Topographic Maps of the United States Quiz
Contours, elevation (10 questions).
Topographic Maps of the United States Quiz: Quick Study Notes
Topographic maps are essential tools for geographers, hikers, and engineers, rendering the three-dimensional terrain of the United States onto a two-dimensional surface. By understanding contour lines and elevation markers, map readers can visualize landscapes, calculate steepness, and identify landforms efficiently.
Key Takeaways
- Contour lines never cross (except rare overhangs).
- The contour interval is the vertical height difference between lines.
- Hachured lines indicate a depression or crater.
- Brown lines denote land elevation; blue denotes water.
- Widely spaced lines indicate flat terrain.
What is a contour interval?
It is the set vertical distance between adjacent contour lines on a map.
How do I identify a hill top?
Look for concentric closed loops; the smallest inner loop represents the peak.
What do V-shaped contours indicate?
They indicate a stream or valley, with the V pointing upstream (uphill).
What are hachure marks?
Small tick marks on a contour line pointing inward, indicating a depression.
Why are some contour lines thicker?
These are index contours, usually every fifth line, labeled to help read elevation.
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