Multiple choice

Which of the following substances is most elastic?

  1. Rubber

  2. Sponge

  3. Steel

  4. Glass

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Steel is the most elastic because it returns to its original shape after deformation (high elastic modulus). Rubber seems stretchy but shows plastic deformation, sponge has low recovery, and glass is brittle (not elastic).

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