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.
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:
- Cut three hairs from four different girls
- Measure each, take note of these measurements.
- Choose a hair, and tight it to the force meter apparatus. You should already have the first weight (100g) hanging from this apparatus.
- 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.
- When the hair breaks, record the amount of weight that it was put.
- Repeat steps 3, 4 and 5 with all of the other hairs.