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Questions and Answers
Windmills generate electricity like modern turbines.
Windmills generate electricity like modern turbines.
False (B)
Watermills rely on the kinetic energy of water to operate their blades.
Watermills rely on the kinetic energy of water to operate their blades.
True (A)
Old windmills have fewer blades than modern turbines.
Old windmills have fewer blades than modern turbines.
False (B)
Both windmills and watermills can dry up or stop working if their energy source is unavailable.
Both windmills and watermills can dry up or stop working if their energy source is unavailable.
Modern wind turbines are shorter than traditional windmills.
Modern wind turbines are shorter than traditional windmills.
Old windmills are designed to have no openings in their blades.
Old windmills are designed to have no openings in their blades.
Renewable energy resources tend to be more expensive than fossil fuels.
Renewable energy resources tend to be more expensive than fossil fuels.
The primary purpose of both windmills and watermills is to generate electricity.
The primary purpose of both windmills and watermills is to generate electricity.
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Study Notes
Overview of Renewable Energy Resources
- Renewable resources are natural resources that regenerate at a faster rate than consumption.
Windmills
- Historically utilized to crush grains and produce flour.
- Function: Operates by wind moving the blades, which transfer kinetic energy to the internal components.
- Characteristics: Shorter than modern wind turbines, more blades, and feature openings in the blades.
Watermills
- Also used for grinding grains to produce flour.
- Function: Operates by water moving the blades, similarly transferring kinetic energy to internal parts.
Importance of Mills
- Essential for processing grains into flour.
Advantages of Renewable Energy
- Both wind and watermills utilize renewable energy sources.
- Generally low operational costs.
Disadvantages of Renewable Energy
- Watermills may become ineffective if water supply diminishes.
- Windmills are reliant on consistent wind; insufficient wind stops functionality.
Modern Wind Turbines
- Currently employed to generate electricity.
- Characteristics: Taller than traditional windmills, fewer blades, and without openings in the blades.
- Similarity to windmills: Both types depend on kinetic energy from wind for operation.
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