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This test consists of 5 short answer questions, 10 short essay questions, and 1 (of 3) essay topics.

Short Answer Questions

1. What does a convex lens do?

2. What happens after an analog quality is turned into binary code?

3. In the illustration of binary code, what represents the "off" number?

4. What happens when visible rays cross the lens of our eye and are bent through the convex surface?

5. What is essential for running an autopilot program?

Short Essay Questions

1. Briefly discuss the three ways musical instruments create waves.

2. Where is the mammoth taken when it feels traumatized and then experiences first joy and then despondency?

3. What is current electricity? What is required to generate it?

4. What are electrons? What does their movement create?

5. What are analog quantities and how are its levels described?

6. What is a CPU and how is it illustrated by Macaulay?

7. Define the two types of waves that are discussed.

8. What is the input?

9. How do liquid crystal displays work?

10. Briefly describe the binary system.

Essay Topics

Write an essay for ONE of the following topics:

Essay Topic 1

Discuss the following:

1) How does Macaulay use the term wheel and axle?

2) How is the wheel and axle related to a screwdriver? To the Hand Drill? A wrench?

3) Do you think the wheel and axle discussed in The New Way Things Work is an important invention? Why or why not.

4) Research the history of the screwdriver. When was it invented? By whom? Where? How were the first screwdrivers made? How are they made today?

Essay Topic 2

Discuss the following:

1) Why is a screw an inclined plane? Explain the basic design of a screw. How does it work as a wedge? What is the value of understanding the principle upon which a screw works?

2) What is an auger? How does an auger work according to the principle of a wedge?

3) Upon what principle of physics is a drill designed? What is another tool that works upon the same principle? How are the two tools alike? How are they different?

Essay Topic 3

Discuss the following:

1) Define the property of precession. How is precession related to wheels. How does precession help a rolling wheel stay upright? How does the rotating speed of a wheel affect precession?

2) What is inertia? How is it related to wheels? How does the weight of an object affect inertia? What does inertia resist? How does this resistance affect the movement of a wheel?

3) What is centrifugal force? How is the property of centrifugal force important ina clothes dryer?

(see the answer keys)

This section contains 966 words (approx. 4 pages at 300 words per page) View a FREE sample