| Date | November 2017 | Marks available | 2 | Reference code | 17N.3.SL.tz0.2 |
| Level | Standard Level | Paper | Paper 3 | Time zone | time zone 0 |
| Command term | Outline | Question number | 2 | Adapted from | N/A |
Question
Outline how convection and evaporation transfer heat from the skin to the environment.
[2]
a.
Explain the effects of three physiological adaptations that occur with heat acclimatization.
[3]
b.
Markscheme
convection:
transfer of heat via movement of a gas or liquid across/ blood within the body ✔
evaporation:
heat loss through the conversion of water/ sweat to vapour ✔
Award [1 max] for each.
a.
Both response & effect required for 1 mark.
b.
Examiners report
Students generally answered this well but a deeper understanding is required about how the evaporation and change of sweat from liquid to gas uses the body’s heat and that this cools the body down.
a.
The difficult part to this question is that it asks for the effects of the adaptation to be explained.
b.
