C. electrical- light energy sound energy->heat energy D. light energy->olectrical energy->heat energy sound energy 7. Electric fans are one of the needed things inside the house. How is energy changed when you plug the electric fan? A The energy is changed from sound to heat energy B. The energy is changed from electrical to wind energy. C. Energy is changed from mechanical to electrical energy. D. Energy is changed from electrical to mechanical energy. 8. You used batteries for your radio to function. Which of the following arrangement of energy transformation is correct? A mechanical energy sound energy B. sound energy mechanical energy C. chemical energy sound energy D. sound energy chemical energy 9. You used a battery-operated flashlight during a blackout in your hometown. Which of the following is correctly arranged? A. heat energy-electrical energy light energy B. chemical energy->light energy sound energy C. chemical energy heat energy sound energy D. chemical energy-electrical energy light energy 10. Which energy transformation occurs in beating the drums? A. sound energy mechanical energy B. mechanical energy sound energy C. electrical energy sound energy D. heat energy-electrical energy 11. Which energy transformation occurs in using the washing machine? A. mechanical energy to electrical energy B. electrical energy to mechanical energy C. electrical energy to sound energy D. heat energy to sound energy 12. Which of the following shows that electrical energy is changed to heat energy? A. lighting a candle B. plugging a flat iron C. plugging an electric fan D. turning on the battery-operated toy car 13. Which energy transformation occurs when you are dancing the Zumba? A. heat energy to sound energy to mechanical energy B. electrical energy to mechanical energy to heat energy 4​