1.7.3 Energy resources

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Question 82

Electricity is distributed from hydroelectric dams to homes and industry.

Statements A–F describe the main stages in the transfer of energy from the Sun to electrical energy in a hydroelectric power station. The statements A–F are not in the correct order.

A: Water vapour condenses and falls as rain on high ground, where it is collected in a reservoir.
B: The turbine turns a generator.
C: Energy from the Sun heats water in oceans and lakes, causing it to evaporate.
D: Water stored in the reservoir has gravitational potential energy.
E: The generator generates electrical energy.
F: Water flowing down the pipes turns a turbine.

Complete the flow chart to describe how a hydroelectric scheme uses energy from the Sun to generate electrical energy. Insert the missing letters in the empty boxes.

\begin{gathered} \boxed{\quad\phantom{\text{A}}\quad} \\ \downarrow \\ \boxed{\quad\text{A}\quad} \\ \downarrow \\ \boxed{\quad\text{D}\quad} \\ \downarrow \\ \boxed{\quad\phantom{\text{A}}\quad} \\ \downarrow \\ \boxed{\quad\phantom{\text{A}}\quad} \\ \downarrow \\ \boxed{\quad\phantom{\text{A}}\quad} \end{gathered}

[4]

State two disadvantages, apart from cost, of using hydroelectric power stations to produce electrical energy for homes and industry.

[2]

Electricity is distributed from hydroelectric dams to homes and industry.

Statements A–F describe the main stages in the transfer of energy from the Sun to electrical energy in a hydroelectric power station. The statements A–F are not in the correct order.

A: Water vapour condenses and falls as rain on high ground, where it is collected in a reservoir.
B: The turbine turns a generator.
C: Energy from the Sun heats water in oceans and lakes, causing it to evaporate.
D: Water stored in the reservoir has gravitational potential energy.
E: The generator generates electrical energy.
F: Water flowing down the pipes turns a turbine.

Complete the flow chart to describe how a hydroelectric scheme uses energy from the Sun to generate electrical energy. Insert the missing letters in the empty boxes.

\begin{gathered} \boxed{\quad\phantom{\text{A}}\quad} \\ \downarrow \\ \boxed{\quad\text{A}\quad} \\ \downarrow \\ \boxed{\quad\text{D}\quad} \\ \downarrow \\ \boxed{\quad\phantom{\text{A}}\quad} \\ \downarrow \\ \boxed{\quad\phantom{\text{A}}\quad} \\ \downarrow \\ \boxed{\quad\phantom{\text{A}}\quad} \end{gathered}

State two disadvantages, apart from cost, of using hydroelectric power stations to produce electrical energy for homes and industry.

[2]

1.7.3 Energy resources

Question 82

Markscheme

1.7.3 Energy resources

Question 82

Markscheme

1.7.3 Energy resources

Question 82

1.7.3 Energy resources Questions

1.7.3 Energy resources

Question 82

1.7.3 Energy resources Questions