ocr: HOW IT WORKS - - - - MICROWAVES - - LL 1 - 0 6 t - - <444 L L - - ALLLLLLLL RAT WAIER MOLECULES Microwaves consist ofintense electric and magnetic fields, which change direction many billions of times each second. Water molecules in the food twist in tune with the changes in these fields. This twisting gives the molecules extra kinetic energy, heating them and the surrounding food.