7. Energy is best described as the ability to do work. Which statement is NOT TRUE about
energy?
A. Energy can transform into different forms.
B. Energy can neither be created nor destroyed.
C. Energy is not important in our everyday survival.
D. Energy has different forms such as light, heat, and sound.
8. What energy transformation takes place in an electric generator?
A. Heat to light to electrical
C. Electrical to mechanical to thermal
B. Electrical to sound to chemical
D. Chemical to mechanical to electrical
9. Which pattern best describes the energy change when light bulb is plugged into a socket?
A. electrical - light-heat
B. electrical - heat - light
C. chemical - heat - electrical
D. heat - electrical - mechanical
10. Electrical energy can be changed to heat energy to do work. Which of the appliances below
shows this energy transformation?
A. television B. electric stove C. radio cassette
D. washing machine
11. Alden is playing an electric guitar. What transformation of energy is shown in playing a
guitar?
A. mechanical energy to sound energy to chemical energy
B. thermal energy to heat energy to mechanical energy
C. electrical energy to sound to heat
D. all of the above.​