4) Which of the following is an example of potential energy? A) chewing food B) water stored in a reservoir C) burning wood D) a fan blade turning E) riding an exercise bike 5) The phrase "ability to do work" is a definition of A) specific heat. B) energy. C) calorie. D) heating E) cooling. 6) Which of the following is a property of a solid? A) It takes the shape of the container. B) It fills the volume of the container. C) The particles move at a rapid rate. D) The interactions between its particles are very weak. E) The particles have fixed positions and are very close together