|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 are large fins which adjust their tilt to compensate for waves?
2. What does a driving force initiate?
3. What is the result of a collision of molecules which break on impact forming new and different molecules?
4. What forms a molecule?
5. What causes sideways movements of a ship?
Short Essay Questions
1. What determines if an object will float?
2. How do power crafts control their direction?
3. How does a zipper work?
4. How does a ship use plimsoll lines?
5. Discuss fulcrum points as pertaining to levers.
6. What is the main focus of the first section of Part 2, Harnessing the Elements?
7. What is a vacuum? What is one invention that uses this principle?
8. What is an internal combustion engine? Cite several examples of such engines.
9. How do the rotor blades on a helicopter work?
10. What rays does the sun emit? How do those rays react to an object?
Write an essay for ONE of the following topics:
Essay Topic 1
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.
Essay Topic 2
1) Define the term airfoil and state where you are likely to find one of them.
2) What does an airfoil create? How does it do so?
3) What are the two opposing pairs of forces at work in an airplane? Explain how those two forces work together to make a plane fly.
4) Explain how a helicopter differs from an airplane in the way it uses the principles of lift and thrust.
Essay Topic 3
Discuss the following:
1) Define nuclear fission.
2) Define nuclear fusion.
3) Describe how nuclear power is produced inside a reactor.
4) What is a chain reaction and how is the principle of a chain reaction important in producing nuclear power?
5) How can the principle of a chain reaction be dangerous? Research and see if there have been any instances when a nuclear chain reaction was not controlled and the consequences of such an event.
This section contains 930 words
(approx. 4 pages at 300 words per page)