Complete the sentences using words from the box.
chemicalgravitationalkineticlightthermal \text{chemical} \quad \text{gravitational} \quad \text{kinetic} \quad \text{light} \quad \text{thermal} chemicalgravitationalkineticlightthermalA hydroelectric power station relies on water stored in a high reservoir, transforming _________________ energy into kinetic energy as it flows downwards.
A biomass burner transforms _________________ energy stored in wood pellets into thermal energy.
A small electric water pump transfers 120 W120\text{ W}120 W of power.
State the equation linking power, energy transferred, and time.
Calculate the amount of energy the pump transfers in 45 s45\text{ s}45 s.
The Sankey diagram below shows the energy transferred by a filament light bulb.
Show that the efficiency of the filament light bulb is 8%8\%8%.
