Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Spider Web Strength
Name: Lindsey
Location: N/A
Country: N/A
Date: N/A

I need to know the stregth of a spider's thread for a science project but I can't find it anywhere.

A major problem with this kind of question is that there are many different spiders and their silk can be quite different from one species to another. That may be one reason I couldn't find any specific numbers, the books I checked say "as strong as a steel thread of the same size," or "twice as strong as a steel thread of the same size," I don't know if that is going to be much help for a science project. The other thing that makes spider silk unique is that while it is super strong it can also stretch, some species as much as double length before breaking.

J. Elliott

Click here to return to the Biology Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (, or at Argonne's Educational Programs

Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory