BIO120H1 Lecture Notes - Lecture 15: Alpine Tundra, Volumetric Heat Capacity, Homeothermy
36
BIO120H1 Full Course Notes
Verified Note
36 documents
Document Summary
Bio120 physiological ecology of animals: heat balance (lecture 15) The hotter you are, the more heat you lose by radiation (earth is always radiating heat out into space) Conduction: transfer by direct contact with substrate (e. g. feet lose heat to ground) Two solid objects in contact with each other. Convection: heat transfer mediated by moving fluid (usually air or water, e. g. wind chill) Amplification of heat exchange between object and environment because mediated by motion of some fluid in which heat transfer is taking place. For something that is warm and in environment where it is losing heat, loses heat faster if it is wet. State change of water takes energy, sucks heat out of organism. Redistribution: circulatory system redistributes heat among body parts, especially to core appendages. For us, most heat generated by muscular action and brain, lose heat through lungs.
