Hair Lab Report - investigate the force needed to break down a hair and to investigate if characteristics found in different hairs make a change in the strength these have.

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Hair Lab Report

Aim: To investigate the force needed to break down a hair and to investigate if characteristics found in different hairs make a change in the strength these have.

Hypothesis:  There will be hairs which would be more resistant; therefore they will resist more weight. I think that hairs which weren’t chemically treated will be stronger than the ones which were.  Also I think the type of colour will be reflected on the strength of these hairs.

Materials:

  • 12 hairs, 3 per person
  • Ruler
  • Weights (100g)
  • Clamp stand
  • Force meter

Diagram:

Method:

  1. Cut three hairs from four different girls
  2. Measure each, take note of these measurements.
  3. Choose a hair, and tight it to the force meter apparatus. You should already have the first weight (100g) hanging from this apparatus.
  4. Be aware that the hair is correctly tightened up, if it does, start adding more weight. First the cylinder weighing 100 g and afterwards the 10g weights.
  5. When the hair breaks, record the amount of weight that it was put.
  6. Repeat steps 3, 4 and 5 with all of the other hairs.
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Results:

Conclusion:

Our aim was to investigate the force needed to break down a hair and to investigate if characteristics found in different hairs make a change in the strength these have. We carry the steps mentioned in the method to accomplish the aim. In this experiment, the dependant variable is the strength of the hair, and the independent variable was the different hairs.

After looking to the results presented on the bar chart, we can deduce that strong colors such as brunette and ginger present strength in the hairs. Compared to this deduction, the color ...

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