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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. What controls direction on a ship?
(a) A valve.
(b) A screw.
(c) A drive.
(d) A rudder.

2. What is electricity flowing through a wire?
(a) Current.
(b) Ohms.
(c) Resistance.
(d) Watts.

3. What is a substance that contains only one type of atom?
(a) A quantum.
(b) A cell.
(c) A molecule.
(d) An element.

4. 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?
(a) The Principle of Action and Reaction.
(b) The Principle of Force and Inertia.
(c) The Principle of Gravity.
(d) The Principle of Push and Thrust.

5. What is an object's weight divided by its volume?
(a) An object's density.
(b) The object's constant mass.
(c) The object's ability to exert force.
(d) An object's elemental number.

Short Answer Questions

1. What are the effects of electricity?

2. What pumps refrigerant out in an air conditioner?

3. What is the main idea in Part 2 of the book?

4. What is any engine that burns fuel inside the engine?

5. What is the principle that states energy is neither created nor destroyed?

Short Essay Questions

1. What is an airfoil and how does it work?

2. Explain thermal radiation.

3. How does the atom bomb work?

4. How do heating elements work?

5. Define combustion. How is combustion used?

6. What determines if an object will float?

7. Describe how a door wedge works.

8. Upon what law of physics are the simple machines that are introduced in Part 1 governed?

9. Define the two elements that explosives must contain.

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

(see the answer keys)

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