Have you ever touched something hot and been burned? Or have you touched a metal object and a nonmetal object at the same temperature and noticed that the metallic object appeared much cooler to the touch? Have you ever seen a lava lamp and wondered what made the fluids contained within it to move? Or wondered why your car gets hotter on the inside than the temperature outside on a sunny day? All of these processes deal with the transfer of thermal energy through conduction, convection, or radiation. These processes can have an effect on you as an individual and can impact societies on a global scale.