Chapter 12 The Boy Who Harnessed the Wind

What is the main idea of chapter 12?

• There were new uses for the windmill William was discovering like charging phones.

• The windmill was limited on the power it could generate because it only operated using AC current.

• The windmill was limited on the power it could generate because it only operated using DC current.

• William begins to use the windmill to pump water.

Tags

CCSS.RI.6.2

CCSS.RI.7.2

CCSS.RI.8.2

CCSS.RL.6.2

CCSS.RL.8.2

What does the word engrossed mean in this sentence on page 215? " My father and sisters were engrossed in a news program on radio one."

• Engrossed means upset about something you hear.

• Engrossed means involved in what you are doing.

• Engrossed means excited about what you are doing.

• Engrossed means not caring about what you are listening to.

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CCSS.RI.6.4

CCSS.RI.7.4

CCSS.RI.8.4

CCSS.RL.7.4

CCSS.RL.8.4

How were the guys in the market charging the phones on the sidewalk?

• They had a very powerful battery they hooked the phones up to.

• They had a generator they used they plugged the phones into.

• They ran an electric cord from the shopkeeper out to the sidewalk.

• They had a power station with a built in electric system from ESCOM.

How did William get the idea he could charge cell phones with his windmill?

• People in the town kept asking him if he could charge their phones since the ESCOM power kept going out.

• He saw the people lined up in long lines at the trading center and got the idea that he could do the same thing.

• He needed to charge his phone and he did not have the money to pay for his to get charged at the trading center.

• His cousin Ruth questioned why he coud not charge her phone with the windmill since it created electricity.

Tags

CCSS.RI.2.1

CCSS.RI.3.1

CCSS.RL.1.1

CCSS.RL.2.1

CCSS.RL.3.1

Why could William's windmill not charge Ruth's phone?

• The cell phone required 1000 volts the dynamo only generated 12 volts of power.

• The cell phone required 400 volts the dynamo only generated 5 volts of power.

• The cell phone required 500 volts the dynamo only generated 12 volts of power

• The cell phone required 220 volts the dynamo only generated 12 volts of power.

How did William describe in a simile how how transformers step up electricity from the power station to your home?

• It's like giving your electricity some coffee and doughnuts to keep it going.

• It's like giving your electricity some Poweraide to keep it going.

• It's like giving your electricity some Gatorade to keep it going.

• It's like giving your electricity a Monster drink to keep it going.

Tags

CCSS.RI.1.4

CCSS.RI.2.1

CCSS.RI.3.1

CCSS.RL.2.1

CCSS.RL.3.1

Describe mutual induction in a step-up transformer?

• An alternating current flows back and forth from the the bottom coil to the secondary coil

• An alternating current flows back and forth from the the secondary coil to the primary coil

• An alternating current flows back and forth from the the primary coil to the secondary coil

• A direct current flows back and forth from the the primary coil to the secondary coil

What is the purpose for using mutual induction in transformers?

• Voltage decreases

• Voltage skips around making it safer

• Voltage continues on a direct current.

• Voltage increases

How did William create his own step-up transformer?

• He cut some sheet iron into an E shape then wired a coil with 20 wire turns and a second coil with 200 times then he attached the dynamo to the primary coil .

• He cut some sheet iron into an E shape then wired a coil with 100 wire turns and a second coil with 200 times then he attached the car battery to the primary coil .

• He cut some sheet iron into an E shape then wired a coil with 200 wire turns and a second coil with 2000 times then he attached the dynamo to the primary coil .

• He cut some sheet iron into an E shape then wired a coil with 200 wire turns and a second coil with 2000 times then he attached the car battery to the primary coil .

Why could William not use the dynamo to charge the dead car battery?

• The car battery uses AC power the Dynamo uses DC power.

• The car battery uses DC power the Dynamo uses AC power.

• The car battery uses too much power for the Dynamo.

• The car battery uses less power than the Dynamo.