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7.5 Renewable Resources - Coggle Diagram
7.5 Renewable Resources
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Biodigestors
Advantages
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helps get rid of and make use of food waste, plant waste
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Geothermal
Advantages
most efficient, clean, and reliable source of energy
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Hydrogen
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Disadvantages
not viable because fuel cells have a negative net energy, fuel cells are expensive, and hydrogen is very dangerous to store and transport.
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Solar Energy
passive heating (using materials that absorb energy, insulated structures) active heating (structures designed to absorb heat and distribute it)
sunlight strikes thin transparent wafers of silicon with trace amounts of metals, creating a flow of electrons, generating electricity (photovoltaic cells)
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Hydro Power
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uses energy from rivers, waves, tides
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Disadvantages
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most productive hydro power sites have already been dammed, with old ones becoming useless. Global warming affects the water cycle so rivers, lakes, and glaciers are decreasing.
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