34. Hydropower as Renewable Energy

According to the essay, what is the primary function of a turbine in a hydropower dam?
1. To hold back water and create a reservoir.
2. To burn fuel and generate heat for power.
3. To spin from the force of water and turn a generator.
4. To refill rivers and lakes through the water cycle.
The essay states that hydropower is renewable. What is the main reason given for this?
1. It is cheaper than building solar farms.
2. It does not require any expensive machinery.
3. The natural water cycle constantly replenishes the water supply.
4. It can be built quickly in any location.
How does the essay contrast hydropower with solar or wind power?
1. Hydropower is much older and more outdated.
2. Hydropower is more reliable because its output can be controlled.
3. Hydropower is less harmful to fish and other animals.
4. Hydropower is the only type that does not burn fuel.
Which of the following is mentioned as an environmental challenge of building dams for hydropower?
1. They release harmful gases into the air.
2. They can make it difficult for fish to move freely in rivers.
3. They rely on a water cycle that is sometimes unpredictable.
4. They require the use of fossil fuels to operate the turbines.
What is the overall conclusion the essay reaches about hydropower?
1. Its environmental damage makes it an unsustainable option.
2. It is too expensive and unreliable to be useful.
3. Despite some challenges, it is an important source of clean energy.
4. It is a historical technology that is no longer relevant.