Class Notes (835,759)
Canada (509,376)
Biology (2,228)
BIO120H1 (1,171)
Lecture 3

Lecture 3 Notes.docx

2 Pages
Unlock Document

Doug Thomson

Slide 1:  Energy can come from food metabolism  Ambient temp is the temp in surroundings  Any body tends to equiberlate- with ambient surrounding o If you go out on cold day, you lose heat to environment o If you go out on hot day, you gain heat  Both hot and cold temp are bad for you because you gain/lose heat  Looses are countered by changing heat exchange parameters,  gain and lose heat through 3 main functions o Radiation: electromagnetic energy that radiates from all objects that are warmer than absolute zero\ o Conduction: heat transferred from one object to another object when objects are touching o Convicted: heat transferred with aid of fluid: air but also water  Process of losing heat, will set up convection currents o Evaporation: required wet surface, gets rid of excess heat, o Redistribution: redistributes heat to different body parts, if overheated core, its blood temp is hot, thus pumps hot blood to parts that get cooled Slide 3:  How quickly something can loose heat had to do with surface area volume ration o Surface area is important because is the interface across which heat can be exchanged o More surface area, more heat can be exchanged faster o Volume important because it relates to the overall heat content o Bigger volume means more heat to get rid of o Volume determines how much heat can be shed, surface area determines how fast heat can be shed Slide 4:  What determines the heat capacity
More Less

Related notes for BIO120H1

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.