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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 happens when a magnetic field flows from a magnet into metal?

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

3. What is created when heating an object to the point that it burns or glows, or by passing an electric current through a vapor or gas?

4. What is it called when levels rise and fall continuously?

5. What parts of ROM memory can be changed?

Short Essay Questions

1. Who is the last mammoth?

2. Discuss the three principles which govern the flow of electricity.

3. What are bar codes?

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

5. How is static electricity formed?

6. Discuss the composition of light.

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

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

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

10. How is magnetism caused?

Essay Topics

Write an essay for ONE of the following topics:

Essay Topic 1

Discuss the following:

1) Define elements, atoms, and molecules.

2) What are the properties of molecules that are important in the way many tools and machines work? Explain the properties and give an example of each property at work in a tool or machine.

3) How is floating related to the physical properties of molecules? What does density have to do with whether something will float? Does one have to take into account more than one density when calculating if something will float? Why or why not?

4) Why do you think a ball of steel that is three inches in diameter sinks, but a steel ship will float? Explain your answer.

Essay Topic 2

Discuss the following:

1) Using examples, explain how a heating element works and the principle(s) of physics behind the element working.

2) Explain how heat can be used to keep things cool. Be sure to discuss both the molecular principle related to cooling and the process of cooling itself in both an air conditioner and a refrigerator.

3) Research and discuss the cultural and environmental impact the ability to cool via an air conditioner and refrigerator has had.

Essay Topic 3

Discuss the following:

1) Explain the basic nature of all springs.

2) What are the three purposes of springs? Give an example of how a spring serves each purpose in a tool or machine. Explain how the spring serves the purpose.

3) When is energy stored in a spring? Give an example of this. What releases that energy?

4) Research the history of springs. When were they invented? By whom? Where? How were the first springs made? How are they made today? What materials have they used to make springs in the past? In the present? Are springs still an important item today? Give several examples of tools and/or machines that use springs. Can you explain how the spring functions in each?

5) Do you think a bungee jumper uses one or more principles of springs? Explain your response.

(see the answer keys)

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