Unit 10 – Energy: Uses and Sources
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Questions and Answers

Which type of energy is stored in stretched or squashed objects?

  • Elastic energy (correct)
  • Gravitational potential energy
  • Thermal energy
  • Chemical energy
  • In which objects is gravitational potential energy stored?

  • Watches and metal
  • Food and batteries
  • Raised objects and water behind a dam (correct)
  • Petrol and diesel
  • Which substance reacts to produce electricity in batteries?

  • Petrol
  • Chemical substances (correct)
  • Diesel
  • Water
  • Which object would be able to store the most thermal energy between wood and metal?

    <p>Metal</p> Signup and view all the answers

    What is the reason for a battery being considered 'dead' or 'flat'?

    <p>Discharge of chemical substances</p> Signup and view all the answers

    Where do machines usually receive their energy from?

    <p>Fuels or electricity</p> Signup and view all the answers

    Which type of energy is usually produced in large power stations?

    <p>Electrical energy</p> Signup and view all the answers

    Where is electricity carried to from large power stations?

    <p>Users along metal cables</p> Signup and view all the answers

    Which of the following represents chemical energy?

    <p>Energy of a chemical substance</p> Signup and view all the answers

    What is a fuel according to the text?

    <p>A chemical that stores energy</p> Signup and view all the answers

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