The Boy Who Harnessed the Wind

What is the primary scientific principle demonstrated by William Kamkwamba in 'The Boy Who Harnessed the Wind'?

• Electromagnetism

• Wind energy conversion

• Nuclear fusion

• Photosynthesis

Which material did William Kamkwamba primarily use to construct the windmill?

• Metal sheets

• Wood

• Plastic

• Scrap materials

What is the main purpose of the windmill built by William Kamkwamba?

• To generate electricity

• To pump water

• To grind grain

• To provide shelter

Which scientific concept is illustrated by the conversion of wind energy into electrical energy?

• Thermodynamics

• Electromagnetic induction

• Newton's laws of motion

• Quantum mechanics

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What type of energy transformation occurs in a windmill?

• Kinetic to electrical

• Chemical to thermal

• Potential to kinetic

• Nuclear to chemical

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How does the design of a windmill blade affect its efficiency?

• Blade length

• Blade material

• Blade angle

• All of the above

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What role does friction play in the operation of a windmill?

• Increases efficiency

• Decreases efficiency

• Has no effect

• Converts energy

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Which of the following is a renewable energy source?

• Coal

• Natural gas

• Wind

• Nuclear

What is the scientific term for the study of wind and its effects?

• Meteorology

• Aerodynamics

• Hydrology

• Geology

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What is the main challenge in harnessing wind energy?

• Wind variability

• High cost

• Complex technology

• Environmental impact

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