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This test consists of 5 multiple choice questions, 5 short answer questions, and 10 short essay questions.

Multiple Choice Questions

1. In a diagram in "Explaining Physics" how many volts were transformed to 240 in a step-up transformer?
(a) 32.
(b) 12.
(c) 24.
(d) 48.

2. After a maize harvest, for how many months would there be dried cobs to burn?
(a) 1 month.
(b) 3 months.
(c) 4 months.
(d) 2 months.

3. How much did Gilbert spend to buy a dynamo?
(a) 175 kwacha.
(b) 150 kwacha.
(c) 200 kwacha.
(d) 225 kwacha.

4. How much could guys make unloading trucks at ChiPiKU store?
(a) 50 kwacha.
(b) 150 kwacha.
(c) 100 kwacha.
(d) 200 kwacha.

5. By the end of Chapter 12, how many times a day did William have to climb his tower to fix the windmill?
(a) 2.
(b) 3.
(c) 4.
(d) 1.

Short Answer Questions

1. When William got a battery to store electricity, how long could energy be stored in the battery?

2. When was Baobab founded?

3. How many meters of wire did William get from Charity?

4. How far was Chipumba from William's home?

5. How many turns did the primary coil of a step-up transformer have in a diagram?

Short Essay Questions

1. How did William try to make biogas?

2. What setbacks did Dr. Mchazime have as a boy?

3. How did William get a dynamo for his windmill?

4. How did money from donors help William help his family?

5. When William was in Tanzania, what was similar about what he saw in that country and what he would have seen at home?

6. Why did William want a battery?

7. What pressure did William feel after his windmill was completed?

8. At the beginning of Chapter 9, how did William waste time in the trading center?

9. Where did William get the wire that he needed to get lighting into his room?

10. How did the word get out about William's windmills?

(see the answer keys)

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