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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 is a core of wire wound around an iron core?

2. What makes it possible to use light and radio waves to communicate?

3. What happens when electrons are rubbed, shuffled, or brushed off one surface onto another?

4. What number represents on in binary code?

5. In which direction do electrons always travel?

Short Essay Questions

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

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

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

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

5. How is artificial light created?

6. How is static electricity formed?

7. Discuss sound waves.

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

9. How do liquid crystal displays work?

10. What are the effects of electrons on the move?

Essay Topics

Write an essay for ONE of the following topics:

Essay Topic 1

Discuss the following:

1) Define the term vacuum.

2) How does a thermos use the principle of a vacuum to keep things hot or cold? Why does a thermos ultimately lose its heat or cold?

3) What is combustion and how is it explained at the molecular level?

4) How do combustion machines take advantage of the principle of combustion?

5) Explain how explosives work and what components must be present in an explosive.

Essay Topic 2

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 3

One of the greatest impacts upon modern society is the invention of the internal combustion engine. Discuss the following:

1) What is an internal combustion engine?

2) Compare an engine that uses gas to one that is used in a jet.

3) Do you think the overall impact of the internal combustion engine in the modern world has been positive or negative? Explain your answer.

4) What engine preceded the internal combustion engine and what did this engine precipitate? Explain how this engine works.

(see the answer keys)

This section contains 872 words (approx. 3 pages at 300 words per page) View a FREE sample