Question

(a) The two boxes on the left each contain the name of an energy resource.
The four boxes on the right contain advantages or disadvantages of the energy resources.
Draw two lines from each energy resource to the advantages or disadvantages of the energy resource.

(b) The statements, A to E, describe processes in a coal-burning power station.
They are not in the correct order.
A    Coal burns to produce thermal energy.
B    A turbine drives a generator.
C   Steam is produced.
D   Steam turns a turbine.
E   Thermal energy boils water.
(i) Use the letters B to E to complete the sequence to describe how the power station generates electricity.
A  $\underset{}{\rightarrow}$ …………. $\underset{}{\rightarrow}$ ………….$\underset{}{\rightarrow}$ ………….$\underset{}{\rightarrow}$ …………$\underset{}{\rightarrow}$ electricity is generated
(ii) State the boiling point of water.

(c) When coal is burned in a power station, the energy in the coal is transferred to the energy outputs shown in Table 9.1.
The energy outputs are shown as percentages of the total energy from the coal.

(i) Explain why Table 9.1 shows that energy is conserved in the processes in the power station.
(ii) The power station in Table 9.1 produces a lot of thermal energy.
Explain why the power station is not efficient.

(d) The electricity generated from the power station is supplied to a house to power the lighting circuit.
Lamps for lighting in the house are connected in a parallel circuit and not in a series circuit.
(i) Complete the circuit diagrams to show the difference between a series circuit and a parallel circuit.
      Use two lamps in each circuit.

ii) State one advantage of connecting lamps in parallel in a lighting circuit.