How do heat and work transfer energy?
Since this is not my area of expertise, I searched Google under the key words "heat work 'energy transfer'" to get these possible sources:
http://www.uwsp.edu/CNR/wcee/keep/Mod1/Rules/EnTransfer.htm
(Broken Link Removed)
http://en.wikipedia.org/wiki/Heat
http://dkreutz.basd.k12.wi.us/thermoIntro.html
http://www.physics4kids.com/files/thermo_transfer.html
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
I hope this helps. Thanks for asking.