Converts sunlight into electricity?

Study for the Water, Air, Energy, and Waste Management for Environmental Sustainability Test. Prepare with flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

Multiple Choice

Converts sunlight into electricity?

Explanation:
Directly converting sunlight into electricity is what photovoltaics do. Photovoltaic cells use a semiconductor junction to turn light energy into electrical energy—the photons excite electrons, creating charge carriers that flow as current. This is a direct conversion: sunlight becomes electricity without needing moving water, wind, or heat from the Earth as intermediate forms. The other options rely on different energy sources: hydropower uses the kinetic energy of moving water to spin a turbine, wind power uses wind to turn a turbine, and geothermal taps heat from the Earth to drive a turbine or generate steam. So for the question about turning sunlight into electricity, photovoltaic (PV) is the correct choice.

Directly converting sunlight into electricity is what photovoltaics do. Photovoltaic cells use a semiconductor junction to turn light energy into electrical energy—the photons excite electrons, creating charge carriers that flow as current. This is a direct conversion: sunlight becomes electricity without needing moving water, wind, or heat from the Earth as intermediate forms. The other options rely on different energy sources: hydropower uses the kinetic energy of moving water to spin a turbine, wind power uses wind to turn a turbine, and geothermal taps heat from the Earth to drive a turbine or generate steam. So for the question about turning sunlight into electricity, photovoltaic (PV) is the correct choice.

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy