3.
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Geothermal energy is obtained by using steam that comes from under the ground. Where does the heat energy come from that creates the steam? |
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From the Sun heating the ground |
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From fossil fuels that have been set alight by volcanoes underground |
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From radioactive decay deep inside the Earth |
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From earthquakes |
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4.
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Which system generates electricity directly from the Sun's radiation? |
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Hydroelectric power |
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Solar panels |
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Tidal power |
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Photovoltaic cells |
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5.
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What is the name given to the source of energy created by the burning of gas from decaying plant or animal waste? |
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Ecomass |
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Biomass |
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Thermalmass |
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Poogas |
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6.
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Which of the following would be a good source of electrical energy for a remote place? |
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A roof made from solar cells |
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A wind turbine |
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A hydroelectric system |
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All of the above |
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7.
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Where does the energy for tidal power stations come from? |
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Other power stations |
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The gravitational attraction of the Sun and Moon |
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The wind |
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Ships passing by and creating waves |
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8.
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In photovoltaic cells on what does the amount of electricity produced depend?? |
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The amount of electricity produced depends only on the light intensity |
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The amount of electricity produced depends only on the size of the photovoltaic cell |
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The amount of electricity produced depends on both the light intensity and size of the photovoltaic cell |
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The amount of electricity produced is the same whatever the light intensity and size of the photovoltaic cell |
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9.
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Which of the following describes the energy changes in a pumped storage hydroelectric system? |
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potential → kinetic → electrical |
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electrical → kinetic → potential → kinetic → electrical |
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chemical → potential → kinetic → electrical |
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chemical → potential → electrical → kinetic → electrical |
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10.
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Choose the answer that contains the missing words in the correct order.
Convection _________ in the Earth's atmosphere give rise to the wind. These are created by ______ energy from the Sun warming up the surface of the Earth. Wind _________ have large blades that are connected to gears linked to a __________. The _________ energy of the wind is transferred into electrical energy. |
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cells, generator, turbines, heat, turning |
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circles, kinetic, turbines, generator, electrical |
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currents, heat, turbines, generator, kinetic |
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currents, light, generators, dynamo, chemical |
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