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| Name: _________________________ | Period: ___________________ |
This test consists of 5 short answer questions, 10 short essay questions, and 1 (of 3) essay topics.
Short Answer Questions
1. What is the action of something burning?
2. The rack and pinion is an example of ______________.
3. What are tanks that take in water to increase the density of the craft?
4. What urges do molecules possess?
5. What is the result of a collision of molecules which break on impact forming new and different molecules?
Short Essay Questions
1. Explain thermal radiation.
2. What is the most common form of inclined plane in machines? How does it work?
3. What is an internal combustion engine? Cite several examples of such engines.
4. Discuss fulcrum points as pertaining to levers.
5. What determines if an object will float?
6. How can electric heat keep things cold?
7. Define the two elements that explosives must contain.
8. Discuss why the density of water varies.
9. Discuss the relation of effort to distance.
10. How does a ship use plimsoll lines?
Essay Topics
Write an essay for ONE of the following topics:
Essay Topic 1
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.
Essay Topic 2
1) Fully explain the principle(s) upon which the lever works.
2) Archimedes is credited with saying, "Give me a place to stand on, and I will move the Earth." This statement was made in reference to his work with levers. Discuss fully, based upon your understanding of levers in The New Way Things Work, what you think Archimedes means.
3) Research the history of levers and write an informative essay about what you have learned. Include a discussion of the way three different levers work.
Essay Topic 3
Nuclear Power is introduced as a concrete woolly mammoth anonymously left at the town gates. The story is a clear parallel to the Trojan Horse. Discuss the following:
1) Research and relate the story of the Trojan Horse.
2) What do you think is the connection between nuclear power and the Trojan horse?
3) Do you think the author is right in suggesting this connection? Why or why not?
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This section contains 912 words (approx. 4 pages at 300 words per page) |
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