The New Way Things Work Test | Mid-Book Test - Medium

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This test consists of 5 multiple choice questions, 5 short answer questions, and 10 short essay questions.

Multiple Choice Questions

1. How does a rocket engine power the craft?
(a) By nuclear fusion.
(b) By the turning of a propeller.
(c) By the combustion of two propellants.
(d) By the combustion of one propellant.

2. What is an absence of substance?
(a) Outer space.
(b) Gravity.
(c) Matter.
(d) A vacuum.

3. What is the density of salt water compared to fresh water?
(a) They have the same density.
(b) Salt water is denser.
(c) It depends on their electrical charge.
(d) Fresh water is denser.

4. How does a zipper operate?
(a) Just lower curved wedges.
(b) The use of triangular wedges and lower curved wedges.
(c) It is not a wedge system, but rather a rolling arc system.
(d) Just using triangular wedges.

5. What is any engine that burns fuel inside the engine?
(a) Steam engine.
(b) Thermodynamic engine.
(c) Nuclear fusion engine.
(d) Internal combustion engine.

Short Answer Questions

1. What are two things a sail can do for a craft?

2. What forms a molecule?

3. What principle is in use as a propeller pushes the water back and as that same water which has been pushed back rolls forward again and hits the propeller?

4. What happens when molecules are squeezed or stretched beyond the boundaries of their comfortable balance?

5. What are large fins which adjust their tilt to compensate for waves?

Short Essay Questions

1. What is an internal combustion engine? Cite several examples of such engines.

2. How do heating elements work?

3. Explain thermal radiation.

4. Discuss the relation of effort to distance.

5. Discuss how sails are used on a boat.

6. What is the most common form of inclined plane in machines? How does it work?

7. How does the atom bomb work?

8. What rays does the sun emit? How do those rays react to an object?

9. How does the inclined plane require less strength for a task?

10. How does a ship use plimsoll lines?

(see the answer keys)

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