TeXes Science Practice Test

What is one significant advantage of hydro-power generation?

1. It produces a high amount of greenhouse gases.

2. It requires large quantities of fossil fuels.

3. It offers a low load factor compared to solar energy.

4. It has a relatively high load factor compared to other renewable sources.

The correct answer is: It has a relatively high load factor compared to other renewable sources.

Hydro-power generation is notable for its relatively high load factor compared to many other renewable energy sources. The load factor is a measure of the reliability and efficiency of an energy source, defined as the ratio of actual output over a period of time to the maximum possible output. Hydropower plants can operate continuously, providing a steady supply of energy, particularly when the water flow is consistent, making them more dependable compared to sources like solar or wind energy, which are affected by weather conditions. This reliability enables hydro-power systems to deliver a stable and continuous flow of electricity, which is crucial for meeting energy demand, especially during peak consumption times. The capacity to store water in reservoirs also allows for energy production to be adjusted according to demand, further enhancing its effectiveness as a consistent energy source. In contrast, options that mention high greenhouse gas production or reliance on fossil fuels do not reflect the ecological benefits associated with hydroelectric power, while the mention of low load factors inaccurately portrays its capabilities compared to other renewable resources.