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Science Test 1-II Review

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  • What are non-renewable energy sources?
    They are energy sources that cannot be replaced once they have been used up.
  • What are renewable energy sources?
    They are energy sources that will never run out.
  • It’s created from the movement of atoms inside an object; the faster they move, the more heat is generated.
    Thermal energy
  • Biomass...renewable or non-renewable?
    Renewable
  • Nuclear energy...renewable or non-renewable?
    Non-renewable
  • Wind energy...renewable or non-renewable?
    Renewable
  • What is the law of conservation of energy?
    Energy cannot be created or destroyed, but it can be transformed.
  • Give an example of an artificial light source.
    Students' own answers.
  • It’s produced by electromagnetic radiation. There are natural (the sun) and artificial (lamp) sources of this energy.
    Light energy
  • It’s stored energy that holds atoms and molecules together. It can be found in food, petrol, and batteries.
    Chemical energy
  • It’s energy that is stored in an object because of its position or state.
    Potential energy
  • Dead plants and wood can be burned to produce steam for making electricity.
    Biomass
  • State the energy input and energy output
    Electrical energy - Thermal energy
  • State the energy input and energy output
    Chemical energy - Light/Sound energy
  • It’s the energy generated because something is moving.
    Kinetic energy
  • Describe a situation that illustrates the law of conservation of energy.
    Students' own answers
  • Solar energy...renewable or non-renewable?
    Renewable
  • Give an example of a loud sound.
    Students' own answers.
  • Geothermal energy...renewable or non-renewable?
    Renewable
  • It’s caused by a vibrating object that generates sound waves.
    Sound energy
  • Oil, coal, and natural gas can be burned to produce electricity.
    Fossil fuels
  • Why can't sound travel in space?
    Because space is a vacuum, so sound does not have a medium to travel through.
  • It is transformed into electricity using large wind turbines.
    Wind energy
  • Give an example of a natural light source.
    Students' own answers.
  • It’s caused by the movement of electrons (tiny particles in atoms) along a conductive material.
    Electricity
  • It is turned into electrical energy using solar panels.
    Solar energy
  • Give an example of a quiet sound.
    Students' own answers.
  • Hydropower...renewable or non-renewable?
    Renewable
  • State the energy input and energy output
    Light energy - Chemical energy
  • Heat from inside the Earth can be used to generate electricity.
    Geothermal energy
  • Moving water can be used to spin turbines and generate electricity.
    Hydropower
  • Uranium is turned into electricity in nuclear power stations.
    Nuclear energy
  • Fossil fuels...renewable or non-renewable?
    Non-renewable
  • It’s the sum of potential energy and kinetic energy that is used to do work.
    Mechanical energy
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