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This quiz consists of 5 multiple choice and 5 short answer questions through Part 2, Harnassing the Elements, Introduction, Floating, Flying and Pressure Power, pp.91-141.

Multiple Choice Questions

1. What is the most common form of inclined plane found in machines?
(a) The pully.
(b) The rods.
(c) The rocker.
(d) The wedge.

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

3. What imparts movement into the air or water around them on a ship?
(a) Levers.
(b) Bits.
(c) Cams.
(d) Propellers.

4. Upon what does the amount of upthrust of an object in water depend?
(a) On how much water the object displaces.
(b) On what the water's electrical charge is.
(c) On whether or not the object is greater than one centimeter in diameter.
(d) On what the object's salinity is.

5. Under normal circumstances, what force(s) does a molecule possess?
(a) The force to overcome inertia.
(b) The force of electron splitting.
(c) The force of energy times matter.
(d) An attracting force and a repelling force.

Short Answer Questions

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

2. What happens if the force of upthrust is equal to the weight of an object in water?

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

4. Where are wheels and axles found?

5. What does the Mechanics of Movement explore?

(see the answer key)

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