Which sequence describes the steps of the elasticity test?

Which sequence describes the steps of the elasticity test?

• A. Remove strand from crown; hold between fingers; twist and release.
• B. Remove strand from side of head above ears; hold between thumb and forefinger; with thumbnail and index finger of the other hand, run distance rapidly creating a series of small curls; gently pull hair taut for 10 seconds and release.
• C. Wet hair, then measure weight.
• D. Cut a strand and apply heat; measure curl.

Answer: (B)

Elasticity is about how well hair can stretch under tension and then return to its original length. The steps described in this sequence focus on picking a strand, applying a controlled and sustained tension, and then watching how it behaves after you release it. By holding the strand and pulling it taut for about 10 seconds, you’re testing whether the hair can resist deformation and rebound, which is the essence of elasticity. A strand with good elasticity will stretch and then recover toward its original length when released; a strand with poor elasticity may stay elongated or break. The other options don’t fit this specific test. Twisting a strand and releasing tends to assess how hair handles twisting rather than the recovery after sustained stretch. Wetting the hair and weighing it relates to porosity, not elasticity. Cutting a strand and applying heat to see curl tests how hair responds to heat/processing, not its stretch-and-recover behavior.

Elasticity is about how well hair can stretch under tension and then return to its original length. The steps described in this sequence focus on picking a strand, applying a controlled and sustained tension, and then watching how it behaves after you release it. By holding the strand and pulling it taut for about 10 seconds, you’re testing whether the hair can resist deformation and rebound, which is the essence of elasticity. A strand with good elasticity will stretch and then recover toward its original length when released; a strand with poor elasticity may stay elongated or break.

The other options don’t fit this specific test. Twisting a strand and releasing tends to assess how hair handles twisting rather than the recovery after sustained stretch. Wetting the hair and weighing it relates to porosity, not elasticity. Cutting a strand and applying heat to see curl tests how hair responds to heat/processing, not its stretch-and-recover behavior.