Work Power high order marking scheme

- Mark Scheme /


Question Answer Marks AO Element Notes Guidance

1 any two from: 2
renewable (form of energy)
no greenhouse gases OR CO2
produced (during operation)
no SO2 OR nitrous oxides
produced OR acidic gases
produced (during op.)
no fuel to transport
power output adjustable to meet
demand
creates lakes for recreation /
tourism

2 (80 N × 3.5 m =) 280 J (2) 2
OR ALLOW
ΔE = Fxd in any form OR GPE=
mgh in any form (1)

3 any 2 valid examples of 2
renewable energy from:
sunlight wind wave hydroelectric
biofuels/biomass tidal



4 (part A) turbine (1) 2
(part B) generator (1)