- Mark Scheme /
Question Answer Marks AO Element Notes Guidance
1 any two from: 2
produces CO2 OR contributes
to global warming / greenhouse
effect
mining damages landscape
produces atmospheric pollution
produces SO2 / NOx / acid rain
soot / particulates / smoke
(produced)
pollution caused by transporting
coal (from mine)
2 elastic / strain / potential 1
2
3 KE = ½ mv in any form OR 3
2
v = 2 × KE / m OR
2
240 = ½ × 7.5 v (1)
2
v = 2 × .5 OR
(v=) √{2 × .5 } OR
(v=) √{2KE / m } (1)
= 8.0 m / s (1)
4 water is heated / changed to 4
steam as it passes through
(fractures in) rocks (1)
steam turns a turbine (1)
the turbine drives a generator
(1)
generator produces electricity
(1)
Question Answer Marks AO Element Notes Guidance
1 any two from: 2
produces CO2 OR contributes
to global warming / greenhouse
effect
mining damages landscape
produces atmospheric pollution
produces SO2 / NOx / acid rain
soot / particulates / smoke
(produced)
pollution caused by transporting
coal (from mine)
2 elastic / strain / potential 1
2
3 KE = ½ mv in any form OR 3
2
v = 2 × KE / m OR
2
240 = ½ × 7.5 v (1)
2
v = 2 × .5 OR
(v=) √{2 × .5 } OR
(v=) √{2KE / m } (1)
= 8.0 m / s (1)
4 water is heated / changed to 4
steam as it passes through
(fractures in) rocks (1)
steam turns a turbine (1)
the turbine drives a generator
(1)
generator produces electricity
(1)
