Heat Transfer by Radiation, Convection and Conduction

1. in the Atmosphere ©2008 Norm Ivey Heat Transfer

11. Example 1 http://www.vernier.com/caliper/fall07/images/heat_transfer_large.jpg The metal conducts heat from the cup of warm water to the cup of cool water.

12. Your Coke becomes cold because the heat from the soda transfers into the ice, not the other way around. http://www.photoanswers.co.uk/ImgGalleryTn/91/10191/2417_16333.jpg Example 2

13. No matter what it feels like, cold does not transfer into your body. What is really happening here? Why do you wear heavy clothes when it’s cold outside? http://www.alaska-in-pictures.com/data/media/9/man-in-extreme-cold_355.jpg

16. http://www.blog.thesietch.org/wp-content/uploads/2007/04/earth.jpg http:// stardate.org/images/gallery/sun5.jpg Heat from the sun radiates through empty space to earth. Example 1

17. http://www.lifefamilytraining.com/img/roasting-marshmallows.jpg Example 2 The heat from the campfire transfers into your marshmallow, giving you a yummy, gooey treat! (Direct contact between the fire and your marshmallow will ruin it!)

20. http://www.eeb.ucla.edu/test/faculty/nezlin/Lecture1/Fig0803.jpg The radiator warms the room by warming the air around it. Then the warm air transfers heat to the rest of the room through convection.

21. http://physics.uoregon.edu/~jimbrau/BrauImNew/Chap07/FG07_03.jpg As air above the road warms up, it rises and is replaced by cooler air, forming a convection current .

22. http://www.aos.wisc.edu/~aalopez/aos101/wk5/heatrans.jpg This picture illustrates all three type of heat transfer. Can you identify them all? Conduction Radiation Convection