Mon Prof Augmenté
Orb Web Geometry
Age 12 · Maths
An orb web is built from straight lines that radiate from a center and a spiral that crosses them. The spider can cover a wide area with only a small amount of silk.
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In the picture
- The center hub where the radial lines meet
- A straight radial line running from the center toward the edge
- The evenly spaced spiral thread crossing the radial lines
- An anchor thread fastened to a branch or stem
Examples
- A spider web between garden plants
- The spokes and rim of a bicycle wheel
Key takeaways
- Straight radials and a spiral can enclose a large area with few threads.
- Even spacing helps the web use silk efficiently.
Quiz: Orb Web Geometry (Age 12)
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Which two parts work together in an orb web to enclose a large area with few threads?
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Why is the spiral thread evenly spaced in an orb web?
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What does the evenly spaced spiral thread do in an orb web?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
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