EASA NAV(A)basic
Which geometrical form best approximates Earth for navigation systems?
Answer
Ellipsoid
Explanation
Earth is slightly flattened at the poles and bulges at the equator, so an **ellipsoid** is a more accurate navigation model than a perfect sphere. **Key takeaway:** Navigation systems model Earth as an ellipsoidal body. **Glossary:** Ellipsoid: a slightly flattened three-dimensional sphere.
Related Questions
- What distance corresponds to one degree of latitude along any meridian?(basic)
- What is the distance between 150°E and 151°E along the equator?(basic)
- What is the difference in latitude between A (12°53′30″N) and B (07°34′30″S)?(basic)
- At approximately which latitudes are the Earth's two polar circles—the Arctic Circle and the Antarctic Circle—located?(basic)
- At latitudes other than the equator, one degree of longitude spans less distance than one degree of longitude at the equator.(basic)
Want to practice more questions like this?
Join myBenkio free and practice past questions for your Nigerian university courses with AI explanations for every answer.
Start Practicing Free