Exploring Renewable Energy Technologies

What is the primary component used in photovoltaic cells to convert sunlight into electricity?

• Copper

• Silicon

• Aluminium

• Iron

Which of the following is a common type of wind turbine used in wind energy systems?

• Horizontal-axis wind turbine

• Vertical-axis water turbine

• Diagonal-axis wind turbine

• Horizontal-axis water turbine

What is the main principle behind hydropower generation?

• Conversion of solar energy into thermal energy

• Conversion of wind energy into mechanical energy

• Conversion of kinetic energy of flowing water into electrical energy

• Conversion of geothermal energy into electrical energy

Which of the following is a method of harnessing geothermal energy?

• Using photovoltaic panels

• Drilling wells to access steam and hot water

• Building dams to store water

• Installing wind turbines

In solar power technologies, what is the term used for the measure of how much sunlight a solar panel can convert into usable electricity?

• Solar absorption

• Solar efficiency

• Solar capacity

• Solar reflection