12. In using door bells and buzzers, electrical energy is transformed to
A. Sound Energy
C. Electrical Energy
B. Heat Energy
D. Chemical Energy
13. What form of energy is produced by plucking the strings of a guitar?
A. Sound Energy
C. Light Energy
B. Heat Energy
D. Electrical Energy
14. The energy produced by vibrating object is
A. Sound Energy
C. Light Energy
B. Heat Energy
D. Electrical Energy
15. When food or liquids become hot, their molecules absorb energy, begin vibrating rapidly, and
start to bounce off of each other. As they collide, energy is produced and transferred, which
warms and cooks our food. What form of energy is described?
A. Sound Energy
C. Light Energy
B. Heat Energy
D. Electrical Energy
16. If we burn a sheet of paper, energy is given off which we see as a flame or describe as a
A. Sound Energy
C. Light Energy
B. Heat Energy
D. Electrical Energy
17. When heat is released from fuel and boils the water to make steam, it turns the turbine which
turns the generator. This will produce
A. Sound Energy
C. Light Energy
B. Heat Energy
D. Electrical Energy
18. Which energy transformation occurs in an electric iron?
A. Heat to Light
C. Heat to Electricity
B. Light to Heat
D. Electricity to Heat
19. Rubbing two pieces of wood together can produce heat and later turn into another form of
energy
A. Sound Energy
C. Light Energy
B. Heat Energy
D. Electrical Energy
20. Many appliances you use every day change electrical energy into other forms. When you use
a toaster to toast bread, electrical energy is changed to
and
A. Heat and Sound
C. Heat and Light
B. Light and Sound
D. Heat and Nuclear
21. When you lighted a lamp or candle, the chemical energy of the lamp is changed into light
energy, and at the same time it can produce
A Heat
B. Sound
C. Electricity
D. Chemical
22. When you plugged a transistor radio in an electrical outlet and switch on the power button,
automatically the electrical energy is turned to
C. Light Energy
23. If you use some appliances, you observe that after few minutes, electrical energy is always
A. Heat Energy
B. Sound Energy
A Light Energy
B. Heat Energy
C. Sound Energy
24. When we turn on the television, electrical energy changes into light and
D. Mechanical
C. Heat and Light D. Heat and Chemical
A
B. Heat and Sound
25. In using door bells and buzzers, electrical energy is transformed to
C. Electrical Energy
D. Chemical Energy
A Sound Energy
B. Heat Energy​