An investigation was carried out to study the rate of water loss via sweating of an athlete when wearing lightweight cotton clothing or heavy synthetic protective clothing while running on a treadmill at various air temperatures.
The table shows the results:
| Air temperature in ∘C^\circ\text{C}∘C | Relative rate of sweating in arbitrary units when wearing cotton clothing | Relative rate of sweating in arbitrary units when wearing synthetic protective clothing |
|---|---|---|
| 15.0 | 2 | 4 |
| 18.0 | 3 | 7 |
| 21.0 | 3 | 11 |
| 24.0 | 5 | 18 |
| 27.0 | 9 | 28 |
| 30.0 | 16 | 40 |
Suggest why the investigation was carried out using the same athlete for both types of clothing.
Compare the effect of increasing air temperature on sweat production when wearing cotton clothing and when wearing synthetic protective clothing.
Suggest why the rate of sweating increases and is higher when wearing the synthetic protective clothing compared to the cotton clothing during exercise.
Suggest a method that could be used to measure the rate of sweating of an athlete.
