Renewable energy (AQA GCSE Design and Technology): Flashcards

Sources that naturally replenish themselves over time

Avoids direct release of carbon emissions

Wind, solar, tidal, hydro-electrical, and biomass

Uses natural air movement to turn turbines with generators

Wind patterns can be unpredictable

Photovoltaic systems and thermal solar systems

Directly convert sunlight into electrical energy

Use sun's heat to warm fluids or create steam

Predictable movement of ocean tides

Artificial barriers across tidal rivers and coastal bays

Tides are highly predictable

Water stored in reservoirs released through turbines

Can produce electricity when needed (on-demand)

Organic materials like waste gases, crops, and organisms

Plants absorb CO2 while growing