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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 urges do molecules possess?
(a) None.
(b) The urge to huddle together or spread apart.
(c) Only the urge to spread apart.
(d) Only the urge to huddle together.

2. What does a driving force initiate?
(a) Electron activity.
(b) Inertia.
(c) Movement.
(d) Work.

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

4. What is the term for the process of molecules moving further apart in convection?
(a) Inference.
(b) Trajection.
(c) Acceleration.
(d) Expansion.

5. In flying, what is used to overcome weight from gravity?
(a) Lift created by the airfoil.
(b) Lift created by the nose.
(c) Lift created by the rudder.
(d) Lift created by the tiller.

Short Answer Questions

1. What do the double walls of a thermos enclose?

2. What are the effects of electricity?

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. When an object absorbs light rays, how is the energy held in the object?

5. What happens if the edges of the two wheels touch?

Short Essay Questions

1. Discuss the four types of gears.

2. Discuss the two principles upon which propellers and rudders work in a boat.

3. How is nuclear power generated? What is one naturally occurring nuclear fusion?

4. What determines if an object will float?

5. What is the main focus of the first section of Part 2, Harnessing the Elements?

6. Discuss fulcrum points as pertaining to levers.

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

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

9. Explain thermal radiation.

10. How can electric heat keep things cold?

(see the answer keys)

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