11. Rubbing two pieces of wood together can produce heat and later turn into another form of energy
A. Sound Energy B. Heat Energy
C. Light Energy D. Electrical Energy
12. 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
B. Light and Sound C. Heat and Light D. Heat and Nuclear
13. 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
14. When you plugged a transistor radio in an electrical outlet and switch on the power button,
automatically the electrical energy is turned to
A. Heat Energy B. Sound Energy C. Light Energy D. Radiant Energy
15. If you use some appliances, you observe that after few minutes, electrical energy is always produced
D. Mechanical
A. Light Energy b. Heat Energy C. Sound Energy
py changes into light and​