All Flashcards
Define solar energy.
Renewable energy derived directly from the sun.
What are photovoltaic (PV) cells?
Cells that convert sunlight directly into electricity.
Define the photovoltaic effect.
The process where sunlight hitting PV cells knocks electrons loose, creating an electrical current.
Define renewable energy source.
An energy source that is naturally replenished and sustainable.
What are semiconductors?
Materials with electrical conductivity between conductors and insulators, used in PV cells.
How does using solar energy promote sustainability?
Reduces reliance on finite fossil fuels, lowers carbon emissions, and promotes energy independence.
How can government incentives promote solar energy?
Tax credits, subsidies, and rebates can lower the initial cost of solar panel installation.
What is solar energy?
Renewable energy derived directly from the sun.
What are solar panels?
Devices used to capture solar energy and convert it into electricity.
What are photovoltaic (PV) cells?
Cells that convert sunlight directly into electricity.
What is the photovoltaic effect?
The process by which PV cells convert sunlight into electricity.
Define renewable energy.
Energy from sources that are naturally replenished, such as sunlight, wind, or water.
What is meant by 'clean energy source'?
Energy source that does not produce greenhouse gases during operation.
What are semiconductors?
Materials with electrical conductivity between conductors and insulators, used in PV cells.
What is solar thermal energy?
Energy that uses the sun's heat to produce electricity or heat water/air.
Define intermittency in the context of solar energy.
The characteristic of solar energy production being dependent on sunlight availability.
What is meant by 'upfront costs' in regards to solar energy?
The initial expenses associated with purchasing and installing solar panels.