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

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

3. What is another type of wedge the author mentions?
(a) The sharp tapered edge of axes.
(b) The gate latch.
(c) The inversion ring.
(d) The caliper.

4. The rack and pinion is an example of ______________.
(a) A gear.
(b) A lever.
(c) A wedge.
(d) A stifle.

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

Short Answer Questions

1. What does the picture of a mammoth pulling a merry-go-round illustrate?

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

3. How does a zipper operate?

4. How does floating harness the power obtained by squeezing or stretching molecules?

5. How does a ship vary in density?

(see the answer key)

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