QCAA Earth & Environmental Science Practice Questions - QCAA Earth & Environmental Science External Assessment (Queensland) Exam

Photovoltaic panels produce high-temperature steam directly, whereas solar thermal systems rely on electrochemical battery reactions. Photovoltaic panels function only at night using infrared radiation, whereas solar thermal systems require direct ultraviolet light. Photovoltaic systems release significant greenhouse gases during operation, whereas solar thermal systems release zero operational or embodied emissions. Photovoltaic panels convert sunlight directly into electricity via semiconductor materials, whereas solar thermal systems use sunlight heat to produce steam and drive turbines.