Solar
What is the main source of solar energy?
Sun
What is the main principle behind hydroelectric power?
Converting water's potential energy into electricity
What is the primary component of wind turbines that rotates?
Rotor blades
What is the source of geothermal energy?
Heat from the Earth’s interior
What is biomass?
Organic matter used as fuel
What is the device used to convert sunlight into electricity?
Photovoltaic (PV) cell
What is the name of the water storage structure used in hydropower?
Dam
What type of energy is harnessed in wind power?
Kinetic energy of wind
What is a geothermal reservoir?
A subsurface area with hot water/steam
Name one example of a biomass feedstock.
Wood, crop residues, animal manure
What is the main limitation of solar energy?
Intermittency (depends on sunlight)
What is the formula for potential energy of stored water?
PE = mgh
What is the ideal location for installing wind turbines?
Open, windy areas (e.g., coasts, ridges)
Which country generates the largest % of electricity from geothermal?
Iceland
What is the process of converting biomass into alcohol fuel?
Fermentation
What type of current do PV cells generate?
Direct Current (DC)
What is the largest hydroelectric power plant in the world?
Three Gorges Dam, China
Which country leads in wind energy generation?
China
What is the main emission from geothermal plants?
Water vapor (and small amounts of CO₂, H₂S)
What is biogas mainly composed of?
Methane (CH₄) and Carbon dioxide (CO₂)
Which country has the highest installed solar PV capacity as of 2024?
China
What is a micro-hydro plant?
A small-scale hydropower system (<100 kW)
What component converts mechanical energy to electrical energy in turbines?
Generator
What is the main type of rock associated with geothermal fields?
Igneous rocks
What is the environmental benefit of biomass?
Carbon neutrality (ideally)