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Questions and Answers
What causes the movement of air, resulting in wind?
What causes the movement of air, resulting in wind?
- The movement of ocean currents
- The gravitational pull of the Moon
- Uneven heating of the Earth's surfaces (correct)
- The rotation of the Earth
What is the main purpose of a windmill?
What is the main purpose of a windmill?
- To capture wind energy (correct)
- To harness solar energy
- To generate electricity from water currents
- To create artificial rain
Why are small turbines more suitable for some areas?
Why are small turbines more suitable for some areas?
- Large turbines can disrupt wildlife habitats
- Small turbines are cheaper to install
- Small turbines are more efficient
- Local electrical grids cannot handle large electrical output (correct)
What is the most common design for wind turbine blades?
What is the most common design for wind turbine blades?
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Why are large turbines well-suited for offshore wind plants?
Why are large turbines well-suited for offshore wind plants?
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What is the primary cause of wind?
What is the primary cause of wind?
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What is the main purpose of a windmill?
What is the main purpose of a windmill?
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Why are large turbines well-suited for offshore wind plants?
Why are large turbines well-suited for offshore wind plants?
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What is the most common design for wind turbine blades?
What is the most common design for wind turbine blades?
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Why are small turbines more suitable for some areas?
Why are small turbines more suitable for some areas?
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Study Notes
Wind and Windmills
- Wind is caused by the uneven heating of the Earth's surface by the sun, resulting in air movement from high to low pressure areas.
Windmills
- The main purpose of a windmill is to convert the kinetic energy of wind into mechanical or electrical energy.
Turbine Design
- Small turbines are more suitable for some areas due to their low visual impact, quiet operation, and ability to generate power at lower wind speeds.
Turbine Blades
- The most common design for wind turbine blades is a horizontal axis with a three-blade configuration.
Offshore Wind Plants
- Large turbines are well-suited for offshore wind plants due to the stronger and more consistent winds available over water.
Wind Cause
- The primary cause of wind is the uneven heating of the Earth's surface by the sun.
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