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Science ABC
Is A Straight Line Always The Shortest Distance Between Two Points?
No, a straight line isn't always the shortest distance between two points. The shortest distance depends on the geometry of the object or surface in question. While a straight line is the shortest distance between two points on a flat...
Curated Video
Is A Straight Line Always The Shortest Distance Between Two Points?
No, a straight line isn't always the shortest distance between two points. The shortest distance depends on the geometry of the object or surface in question. While a straight line is the shortest distance between two points on a flat...
Curated OER
What is a Sphere?
The teacher diagrams and explains the different terms of what comprises a sphere. Follow along and learn about the: radius, diameter, great circle, center, and hemisphere.
Curated OER
What is a Sphere?
The teacher diagrams and explains the different terms of what comprises a sphere. Follow along and learn about the: radius, diameter, great circle, center, hemisphere
US Geological Survey
U.s. Geological Survey: Earthquakes: Great Circles
An animated illustration explains, in simple terms, the concept of measuring distance using great circles around the Earth.