hydropower
Definition
Hydropower is a form of energy that uses the power of moving water to generate electricity. It is a renewable energy source, meaning that it can be used over and over again without running out.
Hydropower plants work by using the force of moving water to turn a turbine. The turbine is connected to a generator, which produces electricity.
There are two main types of hydropower plants: run-of-the-river plants and storage plants. Run-of-the-river plants use the natural flow of water to generate electricity. Storage plants store water in a reservoir behind a dam. The water is then released from the reservoir to generate electricity when needed.
Hydropower is a clean and efficient source of energy. It does not produce greenhouse gases or pollutants, and it is a reliable source of energy. Hydropower is also a relatively affordable source of energy.
However, hydropower plants can have a negative impact on the environment. Dams can block the migration of fish, and they can also change the flow of water in a river or stream. Hydropower plants can also be a hazard to people and wildlife if they fail.
How can the word be used?
The company is planning to hydropower a waterfall in the Amazon rainforest.
Different forms of the word
Noun: Hydropower is the use of water to generate electricity.
Verb: To hydropower something is to generate electricity from it using water.
Adjective: Hydroelectric means relating to or used in the generation of electricity from water.
Etymology
The word "hydropower" comes from the Greek words "hydro" (water) and "power". It was first used in English in the early 19th century to describe the use of water to generate electricity.
Question
What is hydropower?
AQA Science Exam Question and Answer
Question:
Explain the principle of hydropower as a renewable energy source, detailing how it harnesses the energy of flowing water to generate electricity and discussing its advantages and potential environmental impacts.
Answer:
Hydropower is a renewable energy source that capitalises on the kinetic energy of moving water to generate electricity. It operates based on the principle of converting the water's energy into mechanical energy, which is then transformed into electrical energy.
In a hydropower system, flowing water, often from rivers or dams, drives turbines connected to generators. The force of the water turns the turbines, converting the mechanical energy into electricity that can be used to power homes, businesses, and industries.
One advantage of hydropower is its sustainability. It relies on the water cycle, which ensures a constant source of energy as long as water continues to flow. It produces minimal greenhouse gas emissions, contributing to a cleaner energy mix.
However, the construction of dams and other infrastructure for hydropower can have environmental impacts. It may alter local ecosystems, affect aquatic life migration, and change river flow patterns.
In conclusion, hydropower is an effective and renewable energy source that harnesses the natural movement of water to generate electricity. While it offers numerous benefits in terms of sustainability and reduced emissions, careful consideration of its potential environmental impacts is necessary to strike a balance between energy production and ecosystem preservation.