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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 makes waves different from molecules?

2. What is the distance between each peak of energy in a wave?

3. How does Macaulay illustrate the idea of a chemical reaction to produce electricity?

4. How are positive and negative electrons similar to positive and negative poles?

5. What is white light?

Short Essay Questions

1. Discuss the two types of lens, concave and convex.

2. What is the input?

3. How does Bill record the binary numbers of the mammoth's physical presence?

4. Who is the last mammoth?

5. What topic does Part 5 cover?

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

7. What are sensors and detectors? What do they measure?

8. How do some frequencies of electromagnetic wavers appear to our eyes? Which waves can we not see?

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

10. How do liquid crystal displays work?

Essay Topics

Write an essay for ONE of the following topics:

Essay Topic 1

Discuss the following:

1) Which is easier: To pull something down or to pull it up? Why? What is the relevance of this question to the concept of pulleys?

2) Discuss the various types of pulleys, giving examples of each type.

3) Research the history of pulleys and write an informative essay on what you find. Consider the following questions: When were they invented? By whom? Where? How were the first pulleys made? How are they made today? What materials have they used to make pulleys in the past? In the present? Are pulleys still an important tool 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 Principle of Action and Reaction and the Principle of Suction.

2) How is the Principle of Action and Reaction related to a propeller? Explain with examples.

3) How is the principle of suction related to propellers? Explain with examples.

4) How does a sailboat use the principle of suction? How does a sailboat with two triangular sails differ from a sailboat with only one triangular sail with regards to the principle of suction?

5) Do you think the principle of suction applies to using a straw to drink? Explain your response.

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