Question

what are three examples of energy transformation?
flashlight batteries changing chemical energy to electrical and light energy
utility companies changing insulators on electrical wires
the use of turbines and generators to change mechanical energy from wind or water
the human body changing chemical energy into mechanical energy

Explanation:

Energy transformation refers to the conversion of one form of energy to another.

• Flashlight batteries: Chemical energy (stored in battery) is converted to electrical energy (flows through circuit) and then to light energy (produced by bulb).
• Turbines and generators: Mechanical energy (from wind - turning wind turbine blades or water - turning water turbine blades) is converted to electrical energy (generated by generator).
• Human body: Chemical energy (from food - broken down through digestion) is converted to mechanical energy (used for movement like walking, running).

Utility companies changing insulators on electrical wires is a maintenance activity and not an energy transformation process.

Answer:

flashlight batteries changing chemical energy to electrical and light energy, the use of turbines and generators to change mechanical energy from wind or water, the human body changing chemical energy into mechanical energy