13. What energy transformation helps keep your body temperature up?
A. chemical to electromagnetic C. thermal to light
B. chemical to thermal D. thermal to mechanical
14. What energy transformation occurs when your body turns the food you eat into energy that helps you to move and exercise?
A. chemical to mechanical C. mechanical to chemical
B. chemical to thermal D. mechanical to thermal
15. What energy transformation happens in a thermal power plant?
A. chemical to electromagnetic C. thermal to electrical
B. chemical to thermal D. thermal to light
16. Which of the following shows electrical to thermal energy transformation?
A. blender B. electric iron C. piano D. washing machine
17. What energy transformation occurs when an electric stove is plugged into the outlet and use for cooking?
A. chemical to electrical B.electrical to radiant c.electrical to thermal d.radiant to mechanical
18. Which type of energy is produced by a computer, kettle, and an electric iron?
A. heat B. kinetic C. light D. x-rays
19. What kind of energy is transformed from food to give heat in our body?
A. chemical B. electrical C. light D. mechanical
20. Which of the following energy transformations occurs in a hot air balloon
A. chemical-thermal-mechanical
B. thermal-chemical
C.thermal-chemical-electrical
D.thermal-mechanical​