Solar Energy| Energy Resources and Consumption| AP Environmental science| Khan Academy



Passive solar energy systems absorb heat directly from the sun without the use of mechanical and electric equipment, and energy cannot be collected or stored. Active solar energy systems use solar energy to heat a liquid through mechanical and electric equipment to collect and store the energy captured from the sun. Photovoltaic solar cells capture light energy from the sun and transform it directly into electrical energy. Their use is limited by the availability of sunlight.

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Credits:

“Greenroof” by pnwra [Public domain], via Wikimedia Commons:

“Santa Fe adobe” by Carol m [Public domain], via Wikimedia Commons:

“Home awnings” by Conarty [Public domain], via Wikimedia Commons:

“Thermal solar collector” by Norbert Nagel [Public domain], via Wikimedia Commons:

“Ivanpah” by Craig Butz [Public domain], via Wikimedia Commons:

“Heliostats” by Alexchris [Public domain], via Wikimedia Commons:

“Mersin CSP field” by Kohsman [Public domain], via Wikimedia Commons:

“Solar calculator” by Rfassbind [Public domain], via Wikimedia Commons:

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