Hydroelectricity is electricity generated by hydro-power from the gravitational force of falling or flowing water. It is the most widely used form of renewable energy, accounting for nearly twenty percent of global electricity generation. Why hasn't hydroelectricity replaced more traditional sources of electricity? A) It requires a lot of workers. B) There are very high maintenance costs. C) Hydroelectricity is not very reliable energy. D) Construction of a hydro-power plant is very expensive.
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Hydroelectricity is a very labor-intensive process. It can take up to four years to build a hydroelectric power plant. Show more…
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Hydroelectric power is electric power generated by the force of moving water. The table shows the annual percent change in hydroelectric power consumption by the US industrial sector. 15 $$\begin{array}{c|c|c|c|c|c} \hline \text { Year } & 2005 & 2006 & 2007 & 2008 & 2009 \\ \hline \% \text { growth over previous yr } & -1.9 & -10 & -45.4 & 5.1 & 11 \\ \hline \end{array}$$ (a) According to the US Department of Energy, the US industrial sector consumed about 29 trillion BTUs of hydroelectric power in $2006 .$ Approximately how much hydroelectric power (in trillion BTUs) did the US consume in $2007 ?$ In $2005 ?$ (b) Graph the points showing the annual US consumption of hydroelectric power, in trillion BTUs, for the years 2004 to $2009 .$ Label the scales on the horizontal and vertical axes. (c) According to this data, when did the largest yearly decrease, in trillion BTUs, in the US consumption of hydroelectric power occur? What was this decrease?
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Hydroelectric power is electric power generated by the force of moving water. The table shows the annual percent change in hydroelectric power consumption by the US industrial sector. $$\begin{array}{c|c|c|c|c|c} \hline \text { Year } & 2005 & 2006 & 2007 & 2008 & 2009 \\ \hline \text { \% growth over previous yr } & -1.9 & -10 & -45.4 & 5.1 & 11 \\ \hline \end{array}$$ (a) According to the US Department of Energy, the US industrial sector consumed about 29 trillion BTUs of hydroelectric power in $2006 .$ Approximately how much hydroelectric power (in trillion BTUs) did the US consume in $2007 ?$ In $2005 ?$ (b) Graph the points showing the annual US consumption of hydroelectric power, in trillion BTUs, for the years 2004 to $2009 .$ Label the scales on the horizontal and vertical axes. (c) According to this data, when did the largest yearly decrease, in trillion BTUs, in the US consumption of hydroelectric power occur? What was this decrease?
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