The Boy Who Harnessed the Wind Chapters 11 and 12

Front

What is a step-up transformer?

Back

A device that increases voltage from a lower level to a higher level, such as from 12 volts to 220 volts.

Front

Why is a step-up transformer necessary for charging phones?

Back

It increases voltage from 12 volts to 220 volts, allowing the phone to charge effectively.

Front

What was William's first indication that the windmill could produce power?

Back

His father’s radio smoked after playing music briefly.

Front

What invention saved William’s home during a cyclone?

Back

A homemade circuit breaker.

Front

How did William design his light switches?

Back

With bicycle spokes and flip-flop buttons.

Front

What problem did William face with the bike chain?

Back

The bike chain snapped.

Front

How did William solve the problem of the snapping bike chain?

Back

He switched to pulleys and a belt system.

Front

What is a dynamo?

Back

A device that converts mechanical energy into electrical energy.

Front

What role did the windmill play in William's life?

Back

It provided electricity for his home and helped power devices.

Front

What materials did William use to build his windmill?

Back

He used scrap materials, including bicycle parts and wood.