Some energy sources are reliably available at all times, and some are not.
Which row shows three sources all in their correct columns?
| Available at all times | Not available at all times | |
|---|---|---|
| A | wind, coal | hydroelectric |
| B | hydroelectric | coal, wind |
| C | coal, hydroelectric | wind |
| D | wind | coal, hydroelectric |
A
B
C
D
533 exam-style questions on CIE IGCSE Physics 1.7 Energy, work and power, covering 1.7.1a Energy stores and energy transfers, 1.7.1b Conservation of energy, 1.7.1c Kinetic and gravitational potential energy, 1.7.2 Work done, 1.7.3 Energy resources, 1.7.3a Energy resources and electricity generation, 1.7.3b Nuclear fusion as an energy source, 1.7.3c Efficiency of energy transfer, and 1.7.4 Power. Each one has a worked solution and a mark scheme showing where the marks go.