1. A jogger does 3.45 E 6 J of work and gives off 1.67 E 6 J of heat. What is the change in her internal energy? Show your work. 2. What happens to the speed of molecules as you increase the temperature? Is air a good conductor of thermal energy? Why or why not? Name three examples of how convection heats the Earth.
3.What form of thermal energy transfer keeps our planet at a temperature that can support life?
4.You are standing next to a campfire. Do you get warmer because of conduction, convection, or radiation?
5. Describe a feature in a home that prevents heat loss by: Conduction Radiation Convection