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RENEWABLE ENERGIES
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The Earth has three layers, the ..., the mantle and the crust.
core
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When gas turns into a liquid, this is called...
condensation.
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We can build a ... across a river to control the flow of water.
dam
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Geothermal energy is ... inside the Earth.
heat
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When water turns into vaporm this is called...
evaporation.
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Sola energy makes plants...
grow
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Biomass is wood, plants and ...
garbage.
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The energy in biomass comes from the ...
sun.
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Solar cells turn sunlight into...
electricity.
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... makes the water move.
Gravity
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Solar power is ... energy.
light
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In a hydropower plant water spins a ... to make electricity.
turbine
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Solar energy travels to the Earth in ...
rays.
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Wind is moving...
air.
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