7. What energy conversion is mainly manifested by electric stoves, rice cookers and oven toasters? Electrical to A. chemical B. light C. mechanical D. thermal 8. What happens to the molecules of an object when temperature decreases? A. slow down C. stop moving B. move farther apart D. hit other molecules harder 9. What is produced when chemical energy of the lamp is changed into light energy? A. Energy B. Friction C. Heat D. Sound 10. In what form of energy come from through the atmosphere? A. Electricity B. Heat C. Light D. Sound 11. How can chemical energy be transformed to light energy? A. Plucking the strings of the guitar, the strings vibrate and sound is produce B. Performing body processes powered by chemical energy stored transformed to mechanical. C. Lighting a lamp wherein electrical energy is converted into light then to mechanical energy. D Switching on the flashlight then chemical energy is stored in batteries is​