Campfire Glow stick Sun
Solar
panel
Playing a
piano
Ceiling fan
15. Nuclear >
Electromagnetic
and Thermal
O
о
o
о
o
o o
16. Chemical >
Electromagnetic
о
о
O
о о
оо
17. Electrical >
Mechanical
o
o
O
O
18. Chemical >
Thermal and
Electromagnetic
O
o
19.
Electromagnetic
> Electrical
о
O
O
O
O
20. Mechanical >
Sound
O
O
оо
о о