What is electrical energy being transformed into? How do you know?girl blow drying her hairPublic Domain It is being transformed into heat and sound energy because I know a hair dryer produces hot air and makes noise. It is being transformed into heat and sound energy because I know a hair dryer pushed out air and produces hot air. It is being transformed into heat energy because I know a hair dryer produces hot air. It is being transformed into heat, sound, and energy of motion because I know a hair dryer pushes out air, produces hot air, and makes noise.