Question

Срочно.1 . Что можно сказать о энергии воды, удерживаемой плотиной?a. Она небольшаяb. Она огромнаяc. Вода не обладает энергиейd. Это потенциальная энергия2 .Что можно сказать об экологичности падающей воды (гидроэлектростанция)?a. Такие исследования ещё не проводилисьb. Это экологически чистый источник энергииc. Такой вариант загрязняет окружающую средуd. Среди ответов нет верного

Answer 1

1d
2c
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Answer 2

Energy of Water Retained by a Dam

The energy of water retained by a dam can be described as potential energy. When water is stored behind a dam, it gains potential energy due to its position at a higher elevation. This potential energy can be harnessed and converted into other forms of energy, such as electrical energy, through the use of turbines and generators [[1]].

Ecological Impact of Falling Water (Hydroelectric Power)

Hydroelectric power, which harnesses the energy of falling water, is generally considered to be an environmentally friendly source of energy. Here's why:

1. Renewable Energy: Falling water is a renewable energy source because it relies on the water cycle, which continuously replenishes the water in rivers and reservoirs. As long as there is rainfall, the source of energy will not deplete [[2]].

2. Low Greenhouse Gas Emissions: Hydroelectric power plants produce very low levels of greenhouse gas emissions compared to fossil fuel-based power plants. This helps to mitigate climate change and reduce air pollution [[3]].

3. Minimal Water Consumption: Hydroelectric power plants do not consume water for energy generation. The water used for power generation is returned to the river downstream, maintaining the natural flow of the river [[4]].

4. No Fuel Combustion: Unlike fossil fuel power plants, hydroelectric power plants do not burn any fuel. This eliminates the release of pollutants associated with fuel combustion, such as sulfur dioxide and nitrogen oxides [[5]].

It is important to note that while hydroelectric power is generally considered environmentally friendly, there can be some negative environmental impacts associated with the construction of dams and the alteration of river ecosystems. These impacts can include changes in water flow, sediment transport, and the displacement of aquatic species. However, the overall environmental impact of hydroelectric power is often considered to be lower compared to other forms of energy generation, such as coal or natural gas power plants [[6]].

Based on the information provided, the correct answer to the second question would be b. It is an environmentally friendly source of energy.